diff --git a/src/components/App.tsx b/src/components/App.tsx
index d2b55b3..70e02cd 100755
--- a/src/components/App.tsx
+++ b/src/components/App.tsx
@@ -196,7 +196,7 @@ export const App = () => {
     const allDefined = (startDate && endDate && units && selectedFrequency &&
       weatherStation && timezone);
 
-    if (data && allDefined) {
+    if (data.length && allDefined) {
       const formatDataProps = {
         data,
         timezone,
diff --git a/src/constants.ts b/src/constants.ts
index 55e8a9a..0cde804 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -122,7 +122,7 @@ export const kWeatherStationCollectionAttrs = [
       name: "elevation",
       unit: "ft",
       precision: "0",
-      type: "number"
+      type: "numeric",
   },
   { name: "isdID"},
   {