Index: trunk/SDToolBox/extract_data.py
===================================================================
diff -u -r209 -r210
--- trunk/SDToolBox/extract_data.py	(.../extract_data.py)	(revision 209)
+++ trunk/SDToolBox/extract_data.py	(.../extract_data.py)	(revision 210)
@@ -223,7 +223,7 @@
             )
         return (
             indexes_lat_lon,
-            (vals[:, extracted_lat_pos], vals[:, extracted_lon_pos],),
+            (vals[:, extracted_lat_pos].data, vals[:, extracted_lon_pos].data,),
         )
 
     class BaseExtractor(ABC):
@@ -509,20 +509,18 @@
                 Lat: {nn_lat_lon_idx[0].astype(str)}
                 Lon: {nn_lat_lon_idx[1].astype(str)}"""
             )
-            corrected_nn_lat_lon_idx, idx_map = get_unique_indices(nn_lat_lon_idx)
-            output_data.data_dict[output_data.var_lat_key] = [
-                value
-                for idx, value in enumerate(nn_values[self.lat_array_pos].tolist())
-                if idx in idx_map
+            corrected_nn_lat_lon, idx_map = get_unique_indices(nn_values)
+            output_data.data_dict[output_data.var_lat_key] = corrected_nn_lat_lon[
+                self.lat_array_pos
             ]
-            output_data.data_dict[output_data.var_lon_key] = [
-                value
-                for idx, value in enumerate(nn_values[self.lon_array_pos].tolist())
-                if idx in idx_map
+            output_data.data_dict[output_data.var_lon_key] = corrected_nn_lat_lon[
+                self.lon_array_pos
             ]
             output_data.data_dict[output_data.var_station_idx_key] = idx_map
+
+            corrected_nn_lat_lon_idx, _ = get_unique_indices(nn_lat_lon_idx)
             logging.info(
-                f"""Corrected nn indices:
+                f"""Corrected nn indices used for data extraction:
                 Lat: {corrected_nn_lat_lon_idx[0].astype(str)}
                 Lon: {corrected_nn_lat_lon_idx[1].astype(str)}"""
             )