fix: compound rock-ramp fishpasses: averaged velocity between blocks graph does not display

refs #533

src/app/results/macrorugo-compound-results.ts

@@ -217,6 +217,7 @@ export class MacrorugoCompoundResults extends MultiDimensionResults implements P
                 case "Vmax":
                 case "PV":
                 case "xCenter":
+                case "Vg":
                     data.push(this.childrenResults[i].resultElements[vi].getValue(symbol));
                     break;
             }