First pass at adding CO2S query and display

WebCms/Utility/QueryFilter.cs

@@ -58,7 +58,7 @@ namespace LeafWeb.WebCms.Utility
 
             if (!string.IsNullOrEmpty(query.lon))
             {
-                var longitude = Int32.Parse(query.lon);
+                var longitude = int.Parse(query.lon);
                 var range = 0;
                 if (!string.IsNullOrEmpty(query.lonr))
                 {
@@ -73,6 +73,20 @@ namespace LeafWeb.WebCms.Utility
                     select li;
             }
 
+            if (!string.IsNullOrEmpty(query.co2s))
+            {
+                var co2s = double.Parse(query.co2s);
+
+                resultItems =
+                    from li in resultItems
+                    where co2s >=
+                          li.LeafInputData.Max(lid =>
+                              lid.Data.Max(d => d.CO2S) -
+                              lid.Data.Min(d => d.CO2S)
+                              )
+                    select li;
+            }
+
             return resultItems;
         }
     }