diff --git a/json_fields/mm_fields.json b/json_fields/mm_fields.json
index 334ea3f..dd0ca85 100644
--- a/json_fields/mm_fields.json
+++ b/json_fields/mm_fields.json
@@ -82,16 +82,22 @@
           "magic_func": "mcont",
           "contour": "off",
           "contour_highlight": "off",
+          "contour_hilo": "off",
+          "contour_interpolation_ceiling": 8.0,
           "contour_label": "off",
-          "contour_level_list": [0.0, 10.0, 20.0, 30.0, 40.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0],
-          "contour_level_selection_type": "level_list",
+          "contour_level_list": [1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0],        
+          "contour_level_selection_type": "list",
           "contour_shade": "on",
-          "contour_shade_max_level_colour": "rgba(192,192,192,0.7)",
-          "contour_shade_min_level_colour": "rgba(255,255,255,0.0)",
+          "contour_shade_colour_list": [ "rgb(0.96,0.96,1.0)", "rgb(0.88,0.89,0.95)",
+                                         "rgb(0.8,0.83,0.9)", "rgb(0.72,0.76,0.86)",
+                                         "rgb(0.64,0.69,0.81)", "rgb(0.56,0.62,0.76)",
+                                         "rgb(0.49,0.56,0.71)"],
+          "contour_shade_colour_method": "list",
           "contour_shade_method": "area_fill",
-          "contour_shade_technique": "polygon_shading",
+          "contour_shade_max_level": 8.0,
+          "contour_shade_min_level": 1.0,
           "legend": "on"},
-          
+    
   "hcc": {"nameECMF": "High Cloud Cover", 
           "magic_func": "mcont",
           "contour": "off",
diff --git a/json_fields/plot_grib.py b/json_fields/plot_grib.py
index 04146d9..fe518ea 100644
--- a/json_fields/plot_grib.py
+++ b/json_fields/plot_grib.py
@@ -68,7 +68,17 @@ def get_grib_metadata(filename, shortname, level=None):
                 scaling_offset=-273.15
                 units = '°C'
 
-            # precipitations should be in mm
+            # converting total cloud cover for cosmo in okta
+            if units == '%' and grib_get_or_none(gid, "cfVarName") == 'tcc':
+                scaling_factor = 0.08
+                units = 'okta'
+
+            # converting total cloud cover for ifs-ecmwf in okta
+            if units == '(0 - 1)' and grib_get_or_none(gid, "cfVarName") == 'tcc':
+                scaling_factor = 8.0
+                units = 'okta'
+                
+            # converting precipitations in mm
             if units == 'm' and grib_get_or_none(gid, "cfVarName") != 'hzerocl':
                 scaling_factor = 0.001
                 units = 'mm'