fixed return values

src/toargridding/toar_rest_client.py

@@ -591,7 +591,7 @@ class AnalysisService:
 
             data_with_sid = timeseries.join(coords["station_id"], how="inner")
             data_by_station = data_with_sid.groupby("station_id")
-            #mean_data_by_station = data_by_station.mean()
+            mean_data_by_station = data_by_station.mean().
             n_data_by_station = data_by_station.count()
             
             stations_with_gt2_ts = n_data_by_station[n_data_by_station.gt(2).any(axis=1)]
@@ -602,11 +602,11 @@ class AnalysisService:
                 for sid in sid_with_gt2_ts:
                     logger.warning(f"https://toar-data.fz-juelich.de/api/v2/search/?station_id={sid}&variable_id=5&fields=data_start_date,data_end_date,id")
             
-            data_by_station
+            return mean_data_by_station, coords
 
         else:
-            coords.drop("station_id", inplace=True)
-            
+            # ok, we do not need the station Id in the coordinates, so drop it:-)
+            coords.drop("station_id", axis=1,inplace=True)
             return timeseries, coords