Updated docstring for the 'check_metadata' function in 'input_checks.py'.

toarstats/input_checks.py

@@ -111,8 +111,9 @@ def check_metadata(metadata_in, station_lat_in, station_lon_in,
     :param station_climatic_zone_in: the given station climatic zone
                                      argument
 
-    :return: The processed metadata argument or None if there was a
-             problem while processing the given data argument
+    :return: The processed metadata argument or a namedtuple with None
+             values if there was a problem while processing the given
+             metadata argument
     """
     metadata_dict = {"station_lat": station_lat_in,
                      "station_lon": station_lon_in,