diff --git a/docs/01-rstudio-intro.html b/docs/01-rstudio-intro.html
index 71cd2d4..55ca880 100644
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@@ -825,7 +825,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -879,7 +879,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -951,7 +951,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb42">
@@ -1053,7 +1053,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1123,7 +1123,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -1221,7 +1221,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/01-rstudio-intro.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/02-project-intro.html b/docs/02-project-intro.html
index b71eaf0..de1faf7 100644
--- a/docs/02-project-intro.html
+++ b/docs/02-project-intro.html
@@ -704,7 +704,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/03-data-structures-part1.html b/docs/03-data-structures-part1.html
index 1a585f3..dac54a9 100644
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+++ b/docs/03-data-structures-part1.html
@@ -1562,7 +1562,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/03-data-structures-part1.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/04-data-structures-part2.html b/docs/04-data-structures-part2.html
index 2d639b6..c1f96b9 100644
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@@ -1013,7 +1013,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/04-data-structures-part2.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/05-data-subsetting.html b/docs/05-data-subsetting.html
index c330044..7d3b7ba 100644
--- a/docs/05-data-subsetting.html
+++ b/docs/05-data-subsetting.html
@@ -694,7 +694,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb32">
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@@ -917,7 +917,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
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@@ -1103,7 +1103,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal"><li>Extract observations collected for the year 1957</li>
@@ -1175,7 +1175,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p><code>gapminder</code> is a data.frame so it needs to be
 subsetted on two dimensions. <code>gapminder[1:20, ]</code> subsets the
@@ -1272,7 +1272,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/05-data-subsetting.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/06-dplyr.html b/docs/06-dplyr.html
index 268f93e..843290d 100644
--- a/docs/06-dplyr.html
+++ b/docs/06-dplyr.html
@@ -374,7 +374,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data frame Manipulation with dplyr</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -553,7 +553,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
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@@ -689,7 +689,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -850,20 +850,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
@@ -979,8 +980,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/06-dplyr.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/06-dplyr.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/07-plot-ggplot2.html b/docs/07-plot-ggplot2.html
index 74ede9c..443feb2 100644
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@@ -501,7 +501,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -581,7 +581,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>First we create a new object with our filtered data:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -705,7 +705,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/07-plot-ggplot2.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/08-writing-data.html b/docs/08-writing-data.html
index 52edd3b..d820c0b 100644
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@@ -647,7 +647,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/08-writing-data.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/09-raster-structure.html b/docs/09-raster-structure.html
index 91ac2ba..f116038 100644
--- a/docs/09-raster-structure.html
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@@ -738,7 +738,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p><code>+units=m</code> tells us that our data is in meters.</p>
 </div>
@@ -942,7 +942,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -1117,7 +1117,7 @@ <h3 class="callout-title">Challenge 3: Explore Raster Metadata<a class="anchor"
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   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1304,7 +1304,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/09-raster-structure.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/10-raster-plot.html b/docs/10-raster-plot.html
index c589cf2..39b7668 100644
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@@ -949,7 +949,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/10-raster-plot.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/11-raster-reproject-in-r.html b/docs/11-raster-reproject-in-r.html
index 27685cc..969dc4b 100644
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   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/12-vector-open-shapefile-in-r.html b/docs/12-vector-open-shapefile-in-r.html
index 2fd28a5..d83e784 100644
--- a/docs/12-vector-open-shapefile-in-r.html
+++ b/docs/12-vector-open-shapefile-in-r.html
@@ -638,7 +638,7 @@ <h3 class="callout-title">Challenge 1: Import Line and Point Vector
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we import the data:</p>
 <div class="codewrapper sourceCode" id="cb13">
@@ -913,7 +913,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/12-vector-open-shapefile-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/13-vector-shapefile-attributes-in-r.html b/docs/13-vector-shapefile-attributes-in-r.html
index 80d3326..b433226 100644
--- a/docs/13-vector-shapefile-attributes-in-r.html
+++ b/docs/13-vector-shapefile-attributes-in-r.html
@@ -1414,7 +1414,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/13-vector-shapefile-attributes-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/14-vector-plot-shapefiles-custom-legend.html b/docs/14-vector-plot-shapefiles-custom-legend.html
index 25c0ceb..d6b8c80 100644
--- a/docs/14-vector-plot-shapefiles-custom-legend.html
+++ b/docs/14-vector-plot-shapefiles-custom-legend.html
@@ -588,7 +588,7 @@ <h3 class="callout-title">Challenge 1: Plot Polygon by Attribute<a class="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we need to read in the data and see how many unique soils are
 represented in the <code>soilTypeOr</code> attribute.</p>
@@ -859,7 +859,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/14-vector-plot-shapefiles-custom-legend.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/15-vector-when-data-dont-line-up-crs.html b/docs/15-vector-when-data-dont-line-up-crs.html
index d78eef1..1dc2e1d 100644
--- a/docs/15-vector-when-data-dont-line-up-crs.html
+++ b/docs/15-vector-when-data-dont-line-up-crs.html
@@ -724,7 +724,7 @@ <h3 class="callout-title">Challenge 1: Plot Multiple Layers of Spatial
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -843,7 +843,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/15-vector-when-data-dont-line-up-crs.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/16-vector-csv-to-shapefile-in-r.html b/docs/16-vector-csv-to-shapefile-in-r.html
index 1c38ffa..126809d 100644
--- a/docs/16-vector-csv-to-shapefile-in-r.html
+++ b/docs/16-vector-csv-to-shapefile-in-r.html
@@ -1023,7 +1023,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/16-vector-csv-to-shapefile-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/17-vector-raster-integration.html b/docs/17-vector-raster-integration.html
index feff7af..e125b6e 100644
--- a/docs/17-vector-raster-integration.html
+++ b/docs/17-vector-raster-integration.html
@@ -951,7 +951,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/17-vector-raster-integration.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/18-plot-time-series-rasters-in-r.html b/docs/18-plot-time-series-rasters-in-r.html
index b696430..66b0137 100644
--- a/docs/18-plot-time-series-rasters-in-r.html
+++ b/docs/18-plot-time-series-rasters-in-r.html
@@ -646,7 +646,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Learners can find this information in the help files for the
 <code>theme()</code> function. The parameter to set is called
@@ -908,7 +908,7 @@ <h3 class="callout-title">Challenge 2: Divergent Color Ramps<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1021,7 +1021,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/18-plot-time-series-rasters-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/404.html b/docs/404.html
index 0f035ad..5f3b3c0 100644
--- a/docs/404.html
+++ b/docs/404.html
@@ -404,8 +404,8 @@ <h1>Page not found</h1>
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/404.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/404.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/CODE_OF_CONDUCT.html b/docs/CODE_OF_CONDUCT.html
index 02c1694..e72a3dc 100644
--- a/docs/CODE_OF_CONDUCT.html
+++ b/docs/CODE_OF_CONDUCT.html
@@ -440,7 +440,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/CODE_OF_CONDUCT.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/LICENSE.html b/docs/LICENSE.html
index 39616b7..3a08e64 100644
--- a/docs/LICENSE.html
+++ b/docs/LICENSE.html
@@ -491,7 +491,7 @@ <h1>Licenses</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/LICENSE.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/aio.html b/docs/aio.html
index 5838264..785063d 100644
--- a/docs/aio.html
+++ b/docs/aio.html
@@ -913,7 +913,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -967,7 +967,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1041,7 +1041,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb42">
@@ -1146,7 +1146,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1218,7 +1218,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -3625,7 +3625,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb32">
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@@ -3850,7 +3850,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="codewrapper sourceCode" id="cb58">
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@@ -4049,7 +4049,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal">
@@ -4133,7 +4133,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p><code>gapminder</code> is a data.frame so it needs to be
@@ -4177,7 +4177,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
  -->
 </section></section><section id="aio-06-dplyr"><p>Content from <a href="06-dplyr.html">Data frame Manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -4359,7 +4359,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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@@ -4659,20 +4659,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
@@ -4878,7 +4879,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
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 <p>Make sure learners download the data files in Challenge 1 and move
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 <p>Fix each of the following common data frame subsetting errors:</p>
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       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data frame Manipulation with dplyr</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -464,7 +464,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul><li>Introduce the <code>dplyr</code> package as a simpler, more
 intuitive way of doing subsetting.</li>
@@ -572,7 +572,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -708,7 +708,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
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@@ -869,20 +869,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
@@ -998,8 +999,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/06-dplyr.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/06-dplyr.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/07-plot-ggplot2.html b/docs/instructor/07-plot-ggplot2.html
index 7fa64fe..c485687 100644
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@@ -416,7 +416,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul><li>This episode introduces <code>geom_col</code> and
 <code>geom_histogram</code>. These geoms are used in the rest of the
@@ -519,7 +519,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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@@ -599,7 +599,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>First we create a new object with our filtered data:</p>
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@@ -723,7 +723,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/07-plot-ggplot2.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
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index 5d832b6..30405c8 100644
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+++ b/docs/instructor/08-writing-data.html
@@ -681,7 +681,7 @@ <h3 class="accordion-header" id="headingInstructor2">
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/08-writing-data.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/instructor/09-raster-structure.html b/docs/instructor/09-raster-structure.html
index 95a99d2..1ccbd26 100644
--- a/docs/instructor/09-raster-structure.html
+++ b/docs/instructor/09-raster-structure.html
@@ -452,7 +452,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>To minimize transcription errors, show students that they can use the
 “tab” button after typing in <code>describe("</code> to get a list of
@@ -755,7 +755,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p><code>+units=m</code> tells us that our data is in meters.</p>
 </div>
@@ -959,7 +959,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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@@ -1134,7 +1134,7 @@ <h3 class="callout-title">Challenge 3: Explore Raster Metadata<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
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@@ -1321,7 +1321,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/09-raster-structure.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/10-raster-plot.html b/docs/instructor/10-raster-plot.html
index 42ea77e..d21ac5d 100644
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+++ b/docs/instructor/10-raster-plot.html
@@ -951,7 +951,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/10-raster-plot.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/11-raster-reproject-in-r.html b/docs/instructor/11-raster-reproject-in-r.html
index 19ab82a..c2ae487 100644
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+++ b/docs/instructor/11-raster-reproject-in-r.html
@@ -744,7 +744,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/11-raster-reproject-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/12-vector-open-shapefile-in-r.html b/docs/instructor/12-vector-open-shapefile-in-r.html
index a92e3fe..442278c 100644
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+++ b/docs/instructor/12-vector-open-shapefile-in-r.html
@@ -640,7 +640,7 @@ <h3 class="callout-title">Challenge 1: Import Line and Point Vector
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we import the data:</p>
 <div class="codewrapper sourceCode" id="cb13">
@@ -915,7 +915,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/12-vector-open-shapefile-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/instructor/13-vector-shapefile-attributes-in-r.html b/docs/instructor/13-vector-shapefile-attributes-in-r.html
index 83d5dc0..71340d8 100644
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+++ b/docs/instructor/13-vector-shapefile-attributes-in-r.html
@@ -1416,7 +1416,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/13-vector-shapefile-attributes-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/14-vector-plot-shapefiles-custom-legend.html b/docs/instructor/14-vector-plot-shapefiles-custom-legend.html
index c57cb16..be69a63 100644
--- a/docs/instructor/14-vector-plot-shapefiles-custom-legend.html
+++ b/docs/instructor/14-vector-plot-shapefiles-custom-legend.html
@@ -590,7 +590,7 @@ <h3 class="callout-title">Challenge 1: Plot Polygon by Attribute<a class="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we need to read in the data and see how many unique soils are
 represented in the <code>soilTypeOr</code> attribute.</p>
@@ -861,7 +861,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/14-vector-plot-shapefiles-custom-legend.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/docs/instructor/15-vector-when-data-dont-line-up-crs.html b/docs/instructor/15-vector-when-data-dont-line-up-crs.html
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@@ -726,7 +726,7 @@ <h3 class="callout-title">Challenge 1: Plot Multiple Layers of Spatial
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   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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@@ -845,7 +845,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/15-vector-when-data-dont-line-up-crs.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
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   </script><script>
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@@ -1025,7 +1025,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/16-vector-csv-to-shapefile-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
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diff --git a/docs/instructor/17-vector-raster-integration.html b/docs/instructor/17-vector-raster-integration.html
index 2491dc2..f6d042e 100644
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+++ b/docs/instructor/17-vector-raster-integration.html
@@ -953,7 +953,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/17-vector-raster-integration.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/18-plot-time-series-rasters-in-r.html b/docs/instructor/18-plot-time-series-rasters-in-r.html
index 5db7f58..eb71a26 100644
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+++ b/docs/instructor/18-plot-time-series-rasters-in-r.html
@@ -648,7 +648,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Learners can find this information in the help files for the
 <code>theme()</code> function. The parameter to set is called
@@ -910,7 +910,7 @@ <h3 class="callout-title">Challenge 2: Divergent Color Ramps<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -1023,7 +1023,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/18-plot-time-series-rasters-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/404.html b/docs/instructor/404.html
index 64848f0..baba291 100644
--- a/docs/instructor/404.html
+++ b/docs/instructor/404.html
@@ -404,8 +404,8 @@ <h1>Page not found</h1>
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/404.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/404.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/CODE_OF_CONDUCT.html b/docs/instructor/CODE_OF_CONDUCT.html
index ed55336..2f52751 100644
--- a/docs/instructor/CODE_OF_CONDUCT.html
+++ b/docs/instructor/CODE_OF_CONDUCT.html
@@ -442,7 +442,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/CODE_OF_CONDUCT.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/LICENSE.html b/docs/instructor/LICENSE.html
index 17c838f..2d1f558 100644
--- a/docs/instructor/LICENSE.html
+++ b/docs/instructor/LICENSE.html
@@ -493,7 +493,7 @@ <h1>Licenses</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/LICENSE.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/aio.html b/docs/instructor/aio.html
index 85ad344..1468fe8 100644
--- a/docs/instructor/aio.html
+++ b/docs/instructor/aio.html
@@ -458,7 +458,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul>
 <li>Leave about 30 minutes at the start of each workshop and another 15
@@ -518,7 +518,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
+<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
 <div class="accordion-body">
 <ul>
 <li>This lesson is designed to introduce learners to the core concepts
@@ -568,7 +568,7 @@ <h3 class="accordion-header" id="headingInstructor2">
   <h3 class="accordion-header" id="headingInstructor3">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor3" class="accordion-collapse collapse" aria-labelledby="headingInstructor3" data-bs-parent="#accordionInstructor3">
+<div id="collapseInstructor3" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor3" aria-labelledby="headingInstructor3">
 <div class="accordion-body">
 <ul>
 <li>If your workshop includes the <a href="https://datacarpentry.org/organization-geospatial/" class="external-link">Introduction
@@ -993,7 +993,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1047,7 +1047,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1121,7 +1121,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb42">
@@ -1226,7 +1226,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1298,7 +1298,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -1426,7 +1426,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
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 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>Make sure learners download the data files in Challenge 1 and move
 those files to their <code>data/</code> directory.</p>
@@ -3760,7 +3760,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
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 </button>
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 <div class="codewrapper sourceCode" id="cb32">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -4042,7 +4042,7 @@ <h3 class="callout-title">Handling special values<a class="anchor" aria-label="a
   <h3 class="accordion-header" id="headingInstructor1">
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 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>The episode after this one covers the <code>dplyr</code> package,
 which has an alternate subsetting mechanism. Learners do still need to
@@ -4201,7 +4201,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal">
@@ -4285,7 +4285,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p><code>gapminder</code> is a data.frame so it needs to be
@@ -4329,7 +4329,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
  -->
 </section></section><section id="aio-06-dplyr"><p>Content from <a href="06-dplyr.html">Data frame Manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 40 minutes</p>
@@ -4417,7 +4417,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
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 </button>
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 <div class="accordion-body">
 <ul>
 <li>Introduce the <code>dplyr</code> package as a simpler, more
@@ -4531,7 +4531,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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 </button>
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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@@ -4831,20 +4831,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
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 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul>
 <li>This episode introduces <code>geom_col</code> and
@@ -5070,7 +5071,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <p>First we create a new object with our filtered data:</p>
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-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>To minimize transcription errors, show students that they can use the
 “tab” button after typing in <code>describe("</code> to get a list of
@@ -5855,7 +5856,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <p><code>+units=m</code> tells us that our data is in meters.</p>
 </div>
@@ -6067,7 +6068,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
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 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6250,7 +6251,7 @@ <h3 class="callout-title">Challenge 3: Explore Raster Metadata<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -7520,7 +7521,7 @@ <h3 class="callout-title">Challenge 1: Import Line and Point Vector
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we import the data:</p>
 <div class="codewrapper sourceCode" id="cb13">
@@ -8978,7 +8979,7 @@ <h3 class="callout-title">Challenge 1: Plot Polygon by Attribute<a class="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we need to read in the data and see how many unique soils are
 represented in the <code>soilTypeOr</code> attribute.</p>
@@ -9563,7 +9564,7 @@ <h3 class="callout-title">Challenge 1: Plot Multiple Layers of Spatial
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb20">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11067,7 +11068,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Learners can find this information in the help files for the
 <code>theme()</code> function. The parameter to set is called
@@ -11335,7 +11336,7 @@ <h3 class="callout-title">Challenge 2: Divergent Color Ramps<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11439,8 +11440,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/aio.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/aio.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/images.html b/docs/instructor/images.html
index 3b3849c..3e306dc 100644
--- a/docs/instructor/images.html
+++ b/docs/instructor/images.html
@@ -785,8 +785,8 @@ <h3 id="18-plot-time-series-rasters-in-r-figure-10">Figure 10</h3>
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/images.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/images.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/index.html b/docs/instructor/index.html
index 0a5fc93..244dfa7 100644
--- a/docs/instructor/index.html
+++ b/docs/instructor/index.html
@@ -772,8 +772,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/index.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/index.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/key-points.html b/docs/instructor/key-points.html
index b7e53d4..3fe92bb 100644
--- a/docs/instructor/key-points.html
+++ b/docs/instructor/key-points.html
@@ -645,8 +645,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/key-points.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/key-points.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/profiles.html b/docs/instructor/profiles.html
index f52f2c7..d61a080 100644
--- a/docs/instructor/profiles.html
+++ b/docs/instructor/profiles.html
@@ -393,8 +393,8 @@ <h1>Learner Profiles</h1>
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/profiles.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/profiles.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/instructor/reference.html b/docs/instructor/reference.html
index 32d4a39..e69af86 100644
--- a/docs/instructor/reference.html
+++ b/docs/instructor/reference.html
@@ -435,7 +435,7 @@ <h1>Reference</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/reference.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/key-points.html b/docs/key-points.html
index 7a2accb..45299a1 100644
--- a/docs/key-points.html
+++ b/docs/key-points.html
@@ -643,8 +643,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/key-points.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/key-points.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/md5sum.txt b/docs/md5sum.txt
index 455278a..bb60434 100644
--- a/docs/md5sum.txt
+++ b/docs/md5sum.txt
@@ -11,7 +11,7 @@
 "episodes/03-data-structures-part1.Rmd" "ac7d2ef71fe8f554ae74683557b53688" "site/built/03-data-structures-part1.md" "2024-04-23"
 "episodes/04-data-structures-part2.Rmd" "294b100e43d6b16fe234ab6049bd2191" "site/built/04-data-structures-part2.md" "2024-04-23"
 "episodes/05-data-subsetting.Rmd" "372040353d3f3e6ca79dee113da19c7e" "site/built/05-data-subsetting.md" "2024-04-23"
-"episodes/06-dplyr.Rmd" "3007d5680ab0d2212a9fa7fefbcbcf28" "site/built/06-dplyr.md" "2024-04-23"
+"episodes/06-dplyr.Rmd" "d8e95925992bd6b92869c173e93c4784" "site/built/06-dplyr.md" "2024-07-08"
 "episodes/07-plot-ggplot2.Rmd" "0b2f151bc61dc97f5df789b64f5c9dff" "site/built/07-plot-ggplot2.md" "2024-04-23"
 "episodes/08-writing-data.Rmd" "b9c2e7d01b0d9d383ba371c4e63ccd9a" "site/built/08-writing-data.md" "2024-04-23"
 "episodes/09-raster-structure.Rmd" "3c1a8812bec05eb16543eb80babe435d" "site/built/09-raster-structure.md" "2024-04-23"
diff --git a/docs/pkgdown.yml b/docs/pkgdown.yml
index b1a0aa9..0dbc379 100644
--- a/docs/pkgdown.yml
+++ b/docs/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 3.1.1
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-07-01T21:16Z
+last_built: 2024-07-08T21:48Z
 
diff --git a/docs/profiles.html b/docs/profiles.html
index 4ad4d68..cfc223c 100644
--- a/docs/profiles.html
+++ b/docs/profiles.html
@@ -393,8 +393,8 @@ <h1>Learner Profiles</h1>
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/profiles.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/profiles.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/docs/reference.html b/docs/reference.html
index 1ce8466..781e791 100644
--- a/docs/reference.html
+++ b/docs/reference.html
@@ -433,7 +433,7 @@ <h1>Reference</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/reference.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/episodes/06-dplyr.Rmd b/episodes/06-dplyr.Rmd
index e738b6e..c5f1b48 100644
--- a/episodes/06-dplyr.Rmd
+++ b/episodes/06-dplyr.Rmd
@@ -290,7 +290,8 @@ gapminder %>%
     summarize(
       mean_le = mean(lifeExp),
       min_le = min(lifeExp),
-      max_le = max(lifeExp)) %>% 
+      max_le = max(lifeExp), 
+      se_le = sd(lifeExp)/sqrt(n())) %>% 
   ungroup()
 ```
 
diff --git a/site/_pkgdown.yaml b/site/_pkgdown.yaml
index 93acda7..2f8219c 100644
--- a/site/_pkgdown.yaml
+++ b/site/_pkgdown.yaml
@@ -12,7 +12,7 @@ home:
 template:
   package: varnish
   params:
-    time: 2024-07-01 21:16:03 +0000
+    time: 2024-07-08 21:48:38 +0000
     source: https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial
     branch: main
     contact: team@carpentries.org
diff --git a/site/built/06-dplyr.md b/site/built/06-dplyr.md
index 75cea50..aef53c8 100644
--- a/site/built/06-dplyr.md
+++ b/site/built/06-dplyr.md
@@ -412,19 +412,20 @@ gapminder %>%
     summarize(
       mean_le = mean(lifeExp),
       min_le = min(lifeExp),
-      max_le = max(lifeExp)) %>% 
+      max_le = max(lifeExp), 
+      se_le = sd(lifeExp)/sqrt(n())) %>% 
   ungroup()
 ```
 
 ```{.output}
-# A tibble: 5 × 4
-  continent mean_le min_le max_le
-  <chr>       <dbl>  <dbl>  <dbl>
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2
+# A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  <chr>       <dbl>  <dbl>  <dbl> <dbl>
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775
 ```
 
 ## Using `mutate()`
diff --git a/site/built/md5sum.txt b/site/built/md5sum.txt
index 455278a..bb60434 100644
--- a/site/built/md5sum.txt
+++ b/site/built/md5sum.txt
@@ -11,7 +11,7 @@
 "episodes/03-data-structures-part1.Rmd" "ac7d2ef71fe8f554ae74683557b53688" "site/built/03-data-structures-part1.md" "2024-04-23"
 "episodes/04-data-structures-part2.Rmd" "294b100e43d6b16fe234ab6049bd2191" "site/built/04-data-structures-part2.md" "2024-04-23"
 "episodes/05-data-subsetting.Rmd" "372040353d3f3e6ca79dee113da19c7e" "site/built/05-data-subsetting.md" "2024-04-23"
-"episodes/06-dplyr.Rmd" "3007d5680ab0d2212a9fa7fefbcbcf28" "site/built/06-dplyr.md" "2024-04-23"
+"episodes/06-dplyr.Rmd" "d8e95925992bd6b92869c173e93c4784" "site/built/06-dplyr.md" "2024-07-08"
 "episodes/07-plot-ggplot2.Rmd" "0b2f151bc61dc97f5df789b64f5c9dff" "site/built/07-plot-ggplot2.md" "2024-04-23"
 "episodes/08-writing-data.Rmd" "b9c2e7d01b0d9d383ba371c4e63ccd9a" "site/built/08-writing-data.md" "2024-04-23"
 "episodes/09-raster-structure.Rmd" "3c1a8812bec05eb16543eb80babe435d" "site/built/09-raster-structure.md" "2024-04-23"
diff --git a/site/docs/01-rstudio-intro.html b/site/docs/01-rstudio-intro.html
index 71cd2d4..55ca880 100644
--- a/site/docs/01-rstudio-intro.html
+++ b/site/docs/01-rstudio-intro.html
@@ -825,7 +825,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -879,7 +879,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -951,7 +951,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb42">
@@ -1053,7 +1053,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1123,7 +1123,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -1221,7 +1221,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/01-rstudio-intro.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/02-project-intro.html b/site/docs/02-project-intro.html
index b71eaf0..de1faf7 100644
--- a/site/docs/02-project-intro.html
+++ b/site/docs/02-project-intro.html
@@ -704,7 +704,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/02-project-intro.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/03-data-structures-part1.html b/site/docs/03-data-structures-part1.html
index 1a585f3..dac54a9 100644
--- a/site/docs/03-data-structures-part1.html
+++ b/site/docs/03-data-structures-part1.html
@@ -1562,7 +1562,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/03-data-structures-part1.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/04-data-structures-part2.html b/site/docs/04-data-structures-part2.html
index 2d639b6..c1f96b9 100644
--- a/site/docs/04-data-structures-part2.html
+++ b/site/docs/04-data-structures-part2.html
@@ -1013,7 +1013,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/04-data-structures-part2.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/05-data-subsetting.html b/site/docs/05-data-subsetting.html
index c330044..7d3b7ba 100644
--- a/site/docs/05-data-subsetting.html
+++ b/site/docs/05-data-subsetting.html
@@ -694,7 +694,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb32">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -917,7 +917,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1103,7 +1103,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal"><li>Extract observations collected for the year 1957</li>
@@ -1175,7 +1175,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p><code>gapminder</code> is a data.frame so it needs to be
 subsetted on two dimensions. <code>gapminder[1:20, ]</code> subsets the
@@ -1272,7 +1272,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/05-data-subsetting.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/06-dplyr.html b/site/docs/06-dplyr.html
index 268f93e..843290d 100644
--- a/site/docs/06-dplyr.html
+++ b/site/docs/06-dplyr.html
@@ -374,7 +374,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data frame Manipulation with dplyr</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -553,7 +553,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -689,7 +689,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -850,20 +850,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
@@ -979,8 +980,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/06-dplyr.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/06-dplyr.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/07-plot-ggplot2.html b/site/docs/07-plot-ggplot2.html
index 74ede9c..443feb2 100644
--- a/site/docs/07-plot-ggplot2.html
+++ b/site/docs/07-plot-ggplot2.html
@@ -501,7 +501,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -581,7 +581,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>First we create a new object with our filtered data:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -705,7 +705,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/07-plot-ggplot2.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/08-writing-data.html b/site/docs/08-writing-data.html
index 52edd3b..d820c0b 100644
--- a/site/docs/08-writing-data.html
+++ b/site/docs/08-writing-data.html
@@ -647,7 +647,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/08-writing-data.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/09-raster-structure.html b/site/docs/09-raster-structure.html
index 91ac2ba..f116038 100644
--- a/site/docs/09-raster-structure.html
+++ b/site/docs/09-raster-structure.html
@@ -738,7 +738,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p><code>+units=m</code> tells us that our data is in meters.</p>
 </div>
@@ -942,7 +942,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1117,7 +1117,7 @@ <h3 class="callout-title">Challenge 3: Explore Raster Metadata<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1304,7 +1304,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/09-raster-structure.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/10-raster-plot.html b/site/docs/10-raster-plot.html
index c589cf2..39b7668 100644
--- a/site/docs/10-raster-plot.html
+++ b/site/docs/10-raster-plot.html
@@ -949,7 +949,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/10-raster-plot.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/11-raster-reproject-in-r.html b/site/docs/11-raster-reproject-in-r.html
index 27685cc..969dc4b 100644
--- a/site/docs/11-raster-reproject-in-r.html
+++ b/site/docs/11-raster-reproject-in-r.html
@@ -742,7 +742,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/11-raster-reproject-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/12-vector-open-shapefile-in-r.html b/site/docs/12-vector-open-shapefile-in-r.html
index 2fd28a5..d83e784 100644
--- a/site/docs/12-vector-open-shapefile-in-r.html
+++ b/site/docs/12-vector-open-shapefile-in-r.html
@@ -638,7 +638,7 @@ <h3 class="callout-title">Challenge 1: Import Line and Point Vector
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we import the data:</p>
 <div class="codewrapper sourceCode" id="cb13">
@@ -913,7 +913,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/12-vector-open-shapefile-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/13-vector-shapefile-attributes-in-r.html b/site/docs/13-vector-shapefile-attributes-in-r.html
index 80d3326..b433226 100644
--- a/site/docs/13-vector-shapefile-attributes-in-r.html
+++ b/site/docs/13-vector-shapefile-attributes-in-r.html
@@ -1414,7 +1414,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/13-vector-shapefile-attributes-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/14-vector-plot-shapefiles-custom-legend.html b/site/docs/14-vector-plot-shapefiles-custom-legend.html
index 25c0ceb..d6b8c80 100644
--- a/site/docs/14-vector-plot-shapefiles-custom-legend.html
+++ b/site/docs/14-vector-plot-shapefiles-custom-legend.html
@@ -588,7 +588,7 @@ <h3 class="callout-title">Challenge 1: Plot Polygon by Attribute<a class="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we need to read in the data and see how many unique soils are
 represented in the <code>soilTypeOr</code> attribute.</p>
@@ -859,7 +859,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/14-vector-plot-shapefiles-custom-legend.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/15-vector-when-data-dont-line-up-crs.html b/site/docs/15-vector-when-data-dont-line-up-crs.html
index d78eef1..1dc2e1d 100644
--- a/site/docs/15-vector-when-data-dont-line-up-crs.html
+++ b/site/docs/15-vector-when-data-dont-line-up-crs.html
@@ -724,7 +724,7 @@ <h3 class="callout-title">Challenge 1: Plot Multiple Layers of Spatial
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb20">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -843,7 +843,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/15-vector-when-data-dont-line-up-crs.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/16-vector-csv-to-shapefile-in-r.html b/site/docs/16-vector-csv-to-shapefile-in-r.html
index 1c38ffa..126809d 100644
--- a/site/docs/16-vector-csv-to-shapefile-in-r.html
+++ b/site/docs/16-vector-csv-to-shapefile-in-r.html
@@ -1023,7 +1023,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/16-vector-csv-to-shapefile-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/17-vector-raster-integration.html b/site/docs/17-vector-raster-integration.html
index feff7af..e125b6e 100644
--- a/site/docs/17-vector-raster-integration.html
+++ b/site/docs/17-vector-raster-integration.html
@@ -951,7 +951,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/17-vector-raster-integration.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/18-plot-time-series-rasters-in-r.html b/site/docs/18-plot-time-series-rasters-in-r.html
index b696430..66b0137 100644
--- a/site/docs/18-plot-time-series-rasters-in-r.html
+++ b/site/docs/18-plot-time-series-rasters-in-r.html
@@ -646,7 +646,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Learners can find this information in the help files for the
 <code>theme()</code> function. The parameter to set is called
@@ -908,7 +908,7 @@ <h3 class="callout-title">Challenge 2: Divergent Color Ramps<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1021,7 +1021,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/18-plot-time-series-rasters-in-r.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/404.html b/site/docs/404.html
index 0f035ad..5f3b3c0 100644
--- a/site/docs/404.html
+++ b/site/docs/404.html
@@ -404,8 +404,8 @@ <h1>Page not found</h1>
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/404.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/404.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/CODE_OF_CONDUCT.html b/site/docs/CODE_OF_CONDUCT.html
index 02c1694..e72a3dc 100644
--- a/site/docs/CODE_OF_CONDUCT.html
+++ b/site/docs/CODE_OF_CONDUCT.html
@@ -440,7 +440,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/CODE_OF_CONDUCT.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/LICENSE.html b/site/docs/LICENSE.html
index 39616b7..3a08e64 100644
--- a/site/docs/LICENSE.html
+++ b/site/docs/LICENSE.html
@@ -491,7 +491,7 @@ <h1>Licenses</h1>
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/LICENSE.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/aio.html b/site/docs/aio.html
index 5838264..785063d 100644
--- a/site/docs/aio.html
+++ b/site/docs/aio.html
@@ -913,7 +913,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -967,7 +967,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1041,7 +1041,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb42">
@@ -1146,7 +1146,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1218,7 +1218,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -3625,7 +3625,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb32">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3850,7 +3850,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4049,7 +4049,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal">
@@ -4133,7 +4133,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p><code>gapminder</code> is a data.frame so it needs to be
@@ -4177,7 +4177,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
  -->
 </section></section><section id="aio-06-dplyr"><p>Content from <a href="06-dplyr.html">Data frame Manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -4359,7 +4359,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4497,7 +4497,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -4659,20 +4659,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
@@ -4878,7 +4879,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>First we create a new object with our filtered data:</p>
 <div class="codewrapper sourceCode" id="cb11">
@@ -5611,7 +5612,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p><code>+units=m</code> tells us that our data is in meters.</p>
 </div>
@@ -5823,7 +5824,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
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@@ -6006,7 +6007,7 @@ <h3 class="callout-title">Challenge 3: Explore Raster Metadata<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
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@@ -7273,7 +7274,7 @@ <h3 class="callout-title">Challenge 1: Import Line and Point Vector
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we import the data:</p>
 <div class="codewrapper sourceCode" id="cb13">
@@ -8729,7 +8730,7 @@ <h3 class="callout-title">Challenge 1: Plot Polygon by Attribute<a class="anchor
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>First we need to read in the data and see how many unique soils are
 represented in the <code>soilTypeOr</code> attribute.</p>
@@ -9313,7 +9314,7 @@ <h3 class="callout-title">Challenge 1: Plot Multiple Layers of Spatial
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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@@ -10814,7 +10815,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Learners can find this information in the help files for the
 <code>theme()</code> function. The parameter to set is called
@@ -11082,7 +11083,7 @@ <h3 class="callout-title">Challenge 2: Divergent Color Ramps<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -11186,8 +11187,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/aio.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/aio.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
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diff --git a/site/docs/images.html b/site/docs/images.html
index eb95af9..4f22535 100644
--- a/site/docs/images.html
+++ b/site/docs/images.html
@@ -783,8 +783,8 @@ <h3 id="18-plot-time-series-rasters-in-r-figure-10">Figure 10</h3>
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   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/images.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/index.html b/site/docs/index.html
index 3a0b438..cdd200a 100644
--- a/site/docs/index.html
+++ b/site/docs/index.html
@@ -578,8 +578,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/index.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/index.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
+  "dateModified": "2024-07-08",
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/instructor/01-rstudio-intro.html b/site/docs/instructor/01-rstudio-intro.html
index a3ed52a..18b1a5c 100644
--- a/site/docs/instructor/01-rstudio-intro.html
+++ b/site/docs/instructor/01-rstudio-intro.html
@@ -395,7 +395,7 @@ <h1>Introduction to R and RStudio</h1>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul><li>Leave about 30 minutes at the start of each workshop and another 15
 mins at the start of each session for technical difficulties like WiFi
@@ -448,7 +448,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
+<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
 <div class="accordion-body">
 <ul><li>This lesson is designed to introduce learners to the core concepts
 of R that they will need in order to complete the other lessons in this
@@ -493,7 +493,7 @@ <h3 class="accordion-header" id="headingInstructor2">
   <h3 class="accordion-header" id="headingInstructor3">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor3" class="accordion-collapse collapse" aria-labelledby="headingInstructor3" data-bs-parent="#accordionInstructor3">
+<div id="collapseInstructor3" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor3" aria-labelledby="headingInstructor3">
 <div class="accordion-body">
 <ul><li>If your workshop includes the <a href="https://datacarpentry.org/organization-geospatial/" class="external-link">Introduction
 to Geospatial Concepts</a> lesson, learners will have just been
@@ -896,7 +896,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
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@@ -950,7 +950,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
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   <h4 class="accordion-header" id="headingSolution2">Solution to challenge 2</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
@@ -1022,7 +1022,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Solution to challenge 3</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <p>The following can be used as R variables:</p>
 <div class="codewrapper sourceCode" id="cb42">
@@ -1124,7 +1124,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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   <h4 class="accordion-header" id="headingSolution4">Solution to challenge 4</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1194,7 +1194,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -1292,7 +1292,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/01-rstudio-intro.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/instructor/02-project-intro.html b/site/docs/instructor/02-project-intro.html
index 18b7a8a..e4b97cc 100644
--- a/site/docs/instructor/02-project-intro.html
+++ b/site/docs/instructor/02-project-intro.html
@@ -451,7 +451,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>Make sure learners download the data files in Challenge 1 and move
 those files to their <code>data/</code> directory.</p>
@@ -726,7 +726,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/02-project-intro.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/site/docs/instructor/03-data-structures-part1.html b/site/docs/instructor/03-data-structures-part1.html
index 822d5d3..3b9bb8d 100644
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+++ b/site/docs/instructor/03-data-structures-part1.html
@@ -1580,7 +1580,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/site/docs/instructor/04-data-structures-part2.html b/site/docs/instructor/04-data-structures-part2.html
index 3d1b44e..8c2ad84 100644
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@@ -1028,7 +1028,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/04-data-structures-part2.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
   </script><script>
diff --git a/site/docs/instructor/05-data-subsetting.html b/site/docs/instructor/05-data-subsetting.html
index ac28166..efde75b 100644
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@@ -696,7 +696,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb32">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -919,7 +919,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -973,7 +973,7 @@ <h3 class="callout-title">Handling special values<a class="anchor" aria-label="a
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>The episode after this one covers the <code>dplyr</code> package,
 which has an alternate subsetting mechanism. Learners do still need to
@@ -1122,7 +1122,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal"><li>Extract observations collected for the year 1957</li>
@@ -1194,7 +1194,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p><code>gapminder</code> is a data.frame so it needs to be
 subsetted on two dimensions. <code>gapminder[1:20, ]</code> subsets the
@@ -1291,7 +1291,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/05-data-subsetting.html",
   "dateCreated": "2024-04-02",
   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
+  "datePublished": "2024-07-08"
 }
 
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diff --git a/site/docs/instructor/06-dplyr.html b/site/docs/instructor/06-dplyr.html
index 42d6267..c82f3bd 100644
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+++ b/site/docs/instructor/06-dplyr.html
@@ -374,7 +374,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data frame Manipulation with dplyr</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -464,7 +464,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul><li>Introduce the <code>dplyr</code> package as a simpler, more
 intuitive way of doing subsetting.</li>
@@ -572,7 +572,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -708,7 +708,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -869,20 +869,21 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
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 <ul>
 <li>If your workshop includes the <a href="https://datacarpentry.org/organization-geospatial/" class="external-link">Introduction
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   <h4 class="accordion-header" id="headingSolution1">Solution to challenge 1</h4>
 </button>
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 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
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 </button>
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 <p>One way of answering this question in R is to use the
 <code>&gt;</code> to set up the following:</p>
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 <p>The following can be used as R variables:</p>
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 </button>
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 <p>We would use the following R code to install the <code>ggplot2</code>
 package:</p>
@@ -1298,7 +1298,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Solution to challenge 5</h4>
 </button>
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 <p>The correct answers are b and c. Answer a will install, not load, the
 ggplot2 package. Answer b will correctly load the ggplot2 package. Note
@@ -1426,7 +1426,7 @@ <h3 class="card-title">Objectives</h3>
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
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 <p>Make sure learners download the data files in Challenge 1 and move
 those files to their <code>data/</code> directory.</p>
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 </button>
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 <p>The episode after this one covers the <code>dplyr</code> package,
 which has an alternate subsetting mechanism. Learners do still need to
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 <p>Fix each of the following common data frame subsetting errors:</p>
 <ol style="list-style-type: decimal">
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 </button>
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 <ol style="list-style-type: decimal">
 <li><p><code>gapminder</code> is a data.frame so it needs to be
@@ -4329,7 +4329,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
  -->
 </section></section><section id="aio-06-dplyr"><p>Content from <a href="06-dplyr.html">Data frame Manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-07-08 |
         
         <a href="https://github.com/echelleburns/2024-07-01-ucsb-intro-geospatial/edit/main/episodes/06-dplyr.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 40 minutes</p>
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 <ul>
 <li>Introduce the <code>dplyr</code> package as a simpler, more
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 </button>
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 </button>
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 <span>    <span class="fu">summarize</span><span class="op">(</span></span>
 <span>      mean_le <span class="op">=</span> <span class="fu">mean</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
 <span>      min_le <span class="op">=</span> <span class="fu">min</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>,</span>
-<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
+<span>      max_le <span class="op">=</span> <span class="fu">max</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span>, </span>
+<span>      se_le <span class="op">=</span> <span class="fu">sd</span><span class="op">(</span><span class="va">lifeExp</span><span class="op">)</span><span class="op">/</span><span class="fu">sqrt</span><span class="op">(</span><span class="fu">n</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="op">)</span> <span class="op">%&gt;%</span> </span>
 <span>  <span class="fu">ungroup</span><span class="op">(</span><span class="op">)</span></span></code></pre>
 </div>
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
 </h3>
-<pre class="output" tabindex="0"><code># A tibble: 5 × 4
-  continent mean_le min_le max_le
-  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt;
-1 Africa       48.9   23.6   76.4
-2 Americas     64.7   37.6   80.7
-3 Asia         60.1   28.8   82.6
-4 Europe       71.9   43.6   81.8
-5 Oceania      74.3   69.1   81.2</code></pre>
+<pre class="output" tabindex="0"><code># A tibble: 5 × 5
+  continent mean_le min_le max_le se_le
+  &lt;chr&gt;       &lt;dbl&gt;  &lt;dbl&gt;  &lt;dbl&gt; &lt;dbl&gt;
+1 Africa       48.9   23.6   76.4 0.366
+2 Americas     64.7   37.6   80.7 0.540
+3 Asia         60.1   28.8   82.6 0.596
+4 Europe       71.9   43.6   81.8 0.286
+5 Oceania      74.3   69.1   81.2 0.775</code></pre>
 </div>
 </section><section id="using-mutate"><h2 class="section-heading">Using <code>mutate()</code><a class="anchor" aria-label="anchor" href="#using-mutate"></a>
 </h2>
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 <div class="accordion-body">
 <ul>
 <li>This episode introduces <code>geom_col</code> and
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 <p>First we create a new object with our filtered data:</p>
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 <div class="accordion-body">
 <p>To minimize transcription errors, show students that they can use the
 “tab” button after typing in <code>describe("</code> to get a list of
@@ -5855,7 +5856,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
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 <p><code>+units=m</code> tells us that our data is in meters.</p>
 </div>
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 <p>First we need to read in the data and see how many unique soils are
 represented in the <code>soilTypeOr</code> attribute.</p>
@@ -9563,7 +9564,7 @@ <h3 class="callout-title">Challenge 1: Plot Multiple Layers of Spatial
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 </button>
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 <p>Learners can find this information in the help files for the
 <code>theme()</code> function. The parameter to set is called
@@ -11335,7 +11336,7 @@ <h3 class="callout-title">Challenge 2: Divergent Color Ramps<a class="anchor" ar
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   "url": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/aio.html",
   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/instructor/aio.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
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index 3b3849c..3e306dc 100644
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@@ -785,8 +785,8 @@ <h3 id="18-plot-time-series-rasters-in-r-figure-10">Figure 10</h3>
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index 0a5fc93..244dfa7 100644
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index b7e53d4..3fe92bb 100644
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index f52f2c7..d61a080 100644
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   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
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diff --git a/site/docs/instructor/reference.html b/site/docs/instructor/reference.html
index 32d4a39..e69af86 100644
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index 7a2accb..45299a1 100644
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   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
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index 455278a..bb60434 100644
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diff --git a/site/docs/pkgdown.yml b/site/docs/pkgdown.yml
index b1a0aa9..0dbc379 100644
--- a/site/docs/pkgdown.yml
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@@ -2,5 +2,5 @@ pandoc: 3.1.1
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
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index 4ad4d68..cfc223c 100644
--- a/site/docs/profiles.html
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@@ -393,8 +393,8 @@ <h1>Learner Profiles</h1>
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   "identifier": "https://echelleburns.github.io/2024-07-01-ucsb-intro-geospatial/profiles.html",
   "dateCreated": "2024-04-02",
-  "dateModified": "2024-07-01",
-  "datePublished": "2024-07-01"
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diff --git a/site/docs/reference.html b/site/docs/reference.html
index 1ce8466..781e791 100644
--- a/site/docs/reference.html
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@@ -433,7 +433,7 @@ <h1>Reference</h1>
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   "dateModified": "2024-04-23",
-  "datePublished": "2024-07-01"
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