diff --git a/mlair/data_handler/data_handler_wrf_chem.py b/mlair/data_handler/data_handler_wrf_chem.py
index 4dbaf827578301850ec03a712b2098fc5292ae49..9b0f96152d34ddd4a702899d09d0e12297e3e050 100644
--- a/mlair/data_handler/data_handler_wrf_chem.py
+++ b/mlair/data_handler/data_handler_wrf_chem.py
@@ -723,7 +723,7 @@ class SingleGridColumnWrfChemDataLoader(BaseWrfChemDataLoader):
                 df = data[var].to_dataframe()[[var]].reset_index(level=spatial_dims)
 
             df = df[[var] + spatial_dims]
-            df = self.set_external_time_zone_and_convert_to_targer_time(df, target_time_type_or_zone)
+            df = self.set_external_time_zone_and_convert_to_target_time(df, target_time_type_or_zone)
             df = df.groupby(spatial_dims)
             df = df.apply(self._toarstats_wrapper, sampling=target_sampling, statistics=self.statistics_per_var[var],
                           metadata=(meta[self.physical_y_coord_name], meta[self.physical_x_coord_name]))
@@ -735,7 +735,7 @@ class SingleGridColumnWrfChemDataLoader(BaseWrfChemDataLoader):
             # collector.append(df)
             return df
 
-    def set_external_time_zone_and_convert_to_targer_time(self, data, target_time_type_or_zone):
+    def set_external_time_zone_and_convert_to_target_time(self, data, target_time_type_or_zone):
         """
 
         :param data:
@@ -960,7 +960,7 @@ class DataHandlerSingleGridColumn(DataHandlerSingleStation):
     # @TimeTrackingWrapper
     # def prepare_and_apply_toarstats(self, data, meta, target_sampling="daily"):
     #     local_time_zone = self.get_local_time_zone_from_lat_lon(meta=meta)
-    #     hdata = self.set_external_time_zone_and_convert_to_targer_time(data, local_time_zone)
+    #     hdata = self.set_external_time_zone_and_convert_to_target_time(data, local_time_zone)
     #     hsampling_data = []
     #     for i, var in enumerate(hdata.columns):
     #         hdf = toarstats(target_sampling, self.statistics_per_var[var], hdata[var],
@@ -977,7 +977,7 @@ class DataHandlerSingleGridColumn(DataHandlerSingleStation):
     #
     #     return self._force_dask_computation(sampling_data)
     #
-    # def set_external_time_zone_and_convert_to_targer_time(self, data, local_time_zone):
+    # def set_external_time_zone_and_convert_to_target_time(self, data, local_time_zone):
     #     """
     #
     #     :param data: