diff --git a/HSP2tools/HBNOutput.py b/HSP2tools/HBNOutput.py
index 9e3b8ee4..adc1dbb2 100644
--- a/HSP2tools/HBNOutput.py
+++ b/HSP2tools/HBNOutput.py
@@ -94,7 +94,8 @@ def read_data(self) -> None:
             dfname = f'{operation}_{activity}_{id:03d}_{tcode}'
             if self.simulation_duration_count == 0:
                 self.simulation_duration_count = len(times)
-            df = DataFrame(rows, index=times, columns=mapn[operation, id, activity]).sort_index('index')
+            # df = DataFrame(rows, index=times, columns=mapn[operation, id, activity]).sort_index('index')
+            df = DataFrame(rows, index=times, columns=mapn[operation, id, activity]).sort_index()
             self.data_frames.append(df)
 
             self.summaryindx.append(dfname)
diff --git a/tests/convert/regression_base.py b/tests/convert/regression_base.py
index 21d3268d..79ee3ff6 100644
--- a/tests/convert/regression_base.py
+++ b/tests/convert/regression_base.py
@@ -108,17 +108,31 @@ def make_html_report(self, results_dict:Dict[OperationsTuple,ResultsTuple]) -> s
     def make_html_comp_row(self, con:str, no_data_hsp2:bool, 
             no_data_hspf:bool, match:bool, diff:float) -> str:
         """populates each constituents rows"""
-        if no_data_hsp2 or no_data_hspf:
-            html = f'<tr><td>-</td><td>{con}</td><td>NA</td><td>NA</td><td>'
-            html += f'{"Not in HSP2" if no_data_hsp2 else ""}<br>'
-            html += f'{"Not in HSPF" if no_data_hspf else ""}'
-            html += f'</td></tr>\n'
+        diffsOnly= False
+        eliminateNotIns = True
+        html = ''
+        if diffsOnly:
+            if no_data_hsp2 or no_data_hspf:
+                pass
+            else:
+                if match:
+                    pass
+                else:
+                    match_symbol = f'<span style="font-weight:bold;color:red">X</span>'
+                    html = f'<tr><td>-</td><td>{con}</td><td>{diff}</td><td>{match_symbol}</td><td></td></tr>\n'
         else:
-            if match:
-                match_symbol = f'<span style="font-weight:bold;color:green">&#10003;</span>'
+            if no_data_hsp2 or no_data_hspf:
+                if not eliminateNotIns:
+                    html = f'<tr><td>-</td><td>{con}</td><td>NA</td><td>NA</td><td>'
+                    html += f'{"Not in HSP2" if no_data_hsp2 else ""}<br>'
+                    html += f'{"Not in HSPF" if no_data_hspf else ""}'
+                    html += f'</td></tr>\n'
             else:
-                match_symbol = f'<span style="font-weight:bold;color:red">X</span>'
-            html = f'<tr><td>-</td><td>{con}</td><td>{diff}</td><td>{match_symbol}</td><td></td></tr>\n'
+                if match:
+                    match_symbol = f'<span style="font-weight:bold;color:green">&#10003;</span>'
+                else:
+                    match_symbol = f'<span style="font-weight:bold;color:red">X</span>'
+                html = f'<tr><td>-</td><td>{con}</td><td>{diff}</td><td>{match_symbol}</td><td></td></tr>\n'
         return html 
 
     def write_html(self, file:str, html:str) -> None:
@@ -164,7 +178,7 @@ def check_con(self, params:OperationsTuple) -> ResultsTuple:
             if len(ts_hspf.shape) > 1:
                 ts_hspf = ts_hspf.iloc[:,0]
            
-            tolerance = 1e-2
+            tolerance = 1e-2  # may want to change default to max(abs(ts_hsp2.values.min()), abs(ts_hsp2.values.max())) * 1e-3
             # if heat related term, compute special tolerance
             if constituent == 'IHEAT' or constituent == 'ROHEAT' or constituent.startswith('OHEAT') or \
                 constituent == 'QSOLAR' or constituent == 'QLONGW' or constituent == 'QEVAP' or \