Merge pull request #4492 from NicholasTurner23/update/calculate_hourl…

…y_airqualitydata_using_bigqdata

Update/calculate hourly airqualitydata using bigqdata

src/workflows/airqo_etl_utils/airqo_utils.py

@@ -667,7 +667,11 @@ def calibrate_data(data: pd.DataFrame, groupby: str) -> pd.DataFrame:
 
         for groupedby, group in grouped_df:
             # If the below condition fails, the rf_model and lasso_model default to the previously ones used and the ones set as "default" outside the forloop.
-            if not np.isnan(groupedby) and groupedby.lower() in available_models:
+            if (
+                groupedby
+                and not pd.isna(groupedby)
+                and groupedby.lower() in available_models
+            ):
                 try:
                     current_rf_model = GCSUtils.get_trained_model_from_gcs(
                         project_name=project_id,