fix convert

Author: peterdudfield

nowcasting_datamodel/models/convert.py

@@ -100,15 +100,12 @@ def convert_df_to_national_forecast(
         ).to_orm()
         forecast_value_sql.adjust_mw = 0.0
 
+        forecast_value_sql.properties = {}
         if "forecast_mw_plevel_10" in forecast_values_df.columns:
-            forecast_value_sql.properties = {
-                "10": forecast_value.forecast_mw_plevel_10,
-            }
+            forecast_value_sql.properties["10"] = forecast_value.forecast_mw_plevel_10
 
         if "forecast_mw_plevel_90" in forecast_values_df.columns:
-            forecast_value_sql.properties = {
-                "90": forecast_value.forecast_mw_plevel_90,
-            }
+            forecast_value_sql.properties["90"] = forecast_value.forecast_mw_plevel_90
 
         forecast_values.append(forecast_value_sql)