diff --git a/BuildingCoder/BuildingCoder/CmdCollectorPerformance.cs b/BuildingCoder/BuildingCoder/CmdCollectorPerformance.cs
index 773e3e0e..b88deeec 100644
--- a/BuildingCoder/BuildingCoder/CmdCollectorPerformance.cs
+++ b/BuildingCoder/BuildingCoder/CmdCollectorPerformance.cs
@@ -287,6 +287,16 @@ class CmdCollectorPerformance : IExternalCommand
   {
     Document _doc;
 
+    #region Retrieve a sorted list of all levels
+    IOrderedEnumerable<Level> GetSortedLevels( Document doc )
+    {
+      return new FilteredElementCollector( doc )
+        .OfClass( typeof( Level ) )
+        .Cast<Level>()
+        .OrderBy( lev => lev.Elevation );
+    }
+    #endregion // Filter for detail curves
+
     #region Filter for concrete ramps
     IEnumerable<Element> findConcreteRamps( Document doc )
     {
diff --git a/BuildingCoder/BuildingCoder/Properties/AssemblyInfo.cs b/BuildingCoder/BuildingCoder/Properties/AssemblyInfo.cs
index b989e55f..50fc648b 100644
--- a/BuildingCoder/BuildingCoder/Properties/AssemblyInfo.cs
+++ b/BuildingCoder/BuildingCoder/Properties/AssemblyInfo.cs
@@ -63,6 +63,7 @@
 // 2014-11-14 2015.0.116.5 implemented GetInstancesIntersectingElement
 // 2014-11-14 2015.0.116.5 radical rewrite of SelectSingleElement, GetSingleSelectedElement, GetSelectedElementsOrAll to clean up and eliminate obsolete API usage
 // 2014-11-14 2015.0.116.5 radical rewrite of HasRequestedType, which probably never previously worked as intended
+// 2014-11-19 2015.0.116.6 implemented GetSortedLevels
 // 
-[assembly: AssemblyVersion( "2015.0.116.5" )]
-[assembly: AssemblyFileVersion( "2015.0.116.5" )]
+[assembly: AssemblyVersion( "2015.0.116.6" )]
+[assembly: AssemblyFileVersion( "2015.0.116.6" )]