Add test oxygen sensor to assets

datasets/assetData/assetData.json

@@ -59,15 +59,11 @@
               ]
             },
             {
-              "name": "Level",
+              "name": "Quantity (oxygen)",
               "models": [
                 { 
-                  "name": "VegaLevel 10", 
+                  "name": "VegaOxySense 10", 
-                  "units": ["m", "ft", "mm"]
+                  "units": ["g/m³", "mol/m³"]
-                },
-                { 
-                  "name": "VegaLevel 20", 
-                  "units": ["m", "ft", "mm"]
                 }
               ]
             }