diff --git a/mlair/data_handler/data_handler_wrf_chem.py b/mlair/data_handler/data_handler_wrf_chem.py
index ee6ecc849bfeb961059b0b4c343042e001cbd61b..56c90c6e52ffc9dd0596f00b237500a04941382e 100644
--- a/mlair/data_handler/data_handler_wrf_chem.py
+++ b/mlair/data_handler/data_handler_wrf_chem.py
@@ -504,6 +504,7 @@ class SingleGridColumnWrfChemDataLoader(BaseWrfChemDataLoader):
         filename = os.path.join(self.lazy_path, hash + ".nc")
         if not os.path.exists(filename):
             self._data.to_netcdf(filename, format="NETCDF4", engine="netcdf4")
+            logging.info(f"{self.station[0]}: store lazy data: {filename}")
             # dill.dump(self._create_lazy_data(), file=open(filename, "wb"))
 
     # def _create_lazy_data(self):
@@ -514,10 +515,7 @@ class SingleGridColumnWrfChemDataLoader(BaseWrfChemDataLoader):
         filename = os.path.join(self.lazy_path, hash + ".nc")
         try:
             self._data = xr.open_mfdataset(filename)
-            # with open(filename, "rb") as pickle_file:
-            #     lazy_data = dill.load(pickle_file)
-            # self._extract_lazy(lazy_data)
-            logging.debug(f"{self.station[0]}: used lazy data")
+            logging.info(f"{self.station[0]}: used lazy data: {filename}")
         except FileNotFoundError:
             logging.debug(f"{self.station[0]}: could not use lazy data")
             self.reset_data_by_other(self.apply_toarstats())