diff --git a/mlair/helpers/geofunctions.py b/mlair/helpers/geofunctions.py
index d1a3b71236763e17b4ed5bf29d88961c29030569..6bf0af98017cd97f9e3856feb40a6ecd63ae9d18 100644
--- a/mlair/helpers/geofunctions.py
+++ b/mlair/helpers/geofunctions.py
@@ -186,8 +186,6 @@ class VectorRotate:
         :type data:
         :param interpolation_dim: Dimension name of staged dimension
         :type interpolation_dim:
-        :param constant_values:
-        :type constant_values:
         :return:
         :rtype:
         """
@@ -204,8 +202,8 @@ class VectorRotate:
         idx_to_backward_transpose = [list(orig_dims).index(i) for i in new_dims]
 
         # pad data i) left, ii) right for interpolation (mean between two staged values)
-        d1 = data.pad({interpolation_dim: (1, 0)}, constant_values=constant_values,)
-        d2 = data.pad({interpolation_dim: (0, 1)}, constant_values=constant_values,)
+        d1 = data.pad({interpolation_dim: (1, 0)}, constant_values=constant_values)
+        d2 = data.pad({interpolation_dim: (0, 1)}, constant_values=constant_values)
         d = (d1.data + d2.data) * .5
 
         # drop padding boundary
@@ -315,9 +313,9 @@ class VectorRotateLambertConformal2latlon(VectorRotate):
         """
         Rotate u from Lambert conformal to geographic lat/lon.
 
-        :param ugrd:
+        :param ugrd: Wind's u-component on grid cell center in Lambert conformal
         :type ugrd:
-        :param vgrd:
+        :param vgrd: Wind's v-component on grid cell center in Lambert conformal
         :type vgrd:
         :return:
         :rtype:
@@ -328,9 +326,9 @@ class VectorRotateLambertConformal2latlon(VectorRotate):
         """
         Rotate v from Lambert conformal to geographic lat/lon.
 
-        :param ugrd:
+        :param ugrd: Wind's u-component on grid cell center in Lambert conformal
         :type ugrd:
-        :param vgrd:
+        :param vgrd: Wind's v-component on grid cell center in Lambert conformal
         :type vgrd:
         :return:
         :rtype:
@@ -341,9 +339,9 @@ class VectorRotateLambertConformal2latlon(VectorRotate):
         """
         Rotate u, v from Lambert conformal to u, v in geographic lat/lon.
 
-        :param ugrd:
+        :param ugrd: Wind's u-component on grid cell center in Lambert conformal
         :type ugrd:
-        :param vgrd:
+        :param vgrd: Wind's v-component on grid cell center in Lambert conformal
         :type vgrd:
         :return:
         :rtype:
@@ -354,15 +352,16 @@ class VectorRotateLambertConformal2latlon(VectorRotate):
         """
         First interpolate u, v from staged grid cells to grid center, than rotate u, v from Lambert conformal to u, v
         in geographic lat/lon.
-        :param ustg: wind's u-component on staged ("half") grid in Lambert conformal
+
+        :param ustg: Wind's u-component on staged ("half") grid in Lambert conformal
         :type ustg:
-        :param vstg: wind's v-component on staged ("half") grid in Lambert conformal
+        :param vstg: Wind's v-component on staged ("half") grid in Lambert conformal
         :type vstg:
         :param ustg_dim: Dimension name of staged u-component
         :type ustg_dim:
         :param vstg_dim: Dimension name of staged v-component
         :type vstg_dim:
-        :return: u, v on grid center in geographic lat/lon direction
+        :return: u, v on grid cell center in geographic lat/lon direction
         :rtype:
         """
         ugrd = self.interpolate_to_grid_center(ustg, ustg_dim)
@@ -373,9 +372,9 @@ class VectorRotateLambertConformal2latlon(VectorRotate):
         """
         Convert u, v from Lambert conformal to wdspd, wdir in geographic lat/lon.
 
-        :param ugrd: wind's u-component on grid center in Lambert conformal
+        :param ugrd: Wind's u-component on grid center in Lambert conformal
         :type ugrd:
-        :param vgrd: wind's v-component on grid center in Lambert conformal
+        :param vgrd: Wind's v-component on grid center in Lambert conformal
         :type vgrd:
         :return:
         :rtype:
@@ -388,9 +387,9 @@ class VectorRotateLambertConformal2latlon(VectorRotate):
         First interpolate u, v from staged grid cells to grid center, than rotate u, v from Lambert conformal to
         wdspd, wdir in geographic lat/lon.
 
-        :param ustg: wind's u-component on staged ("half") grid in Lambert conformal
+        :param ustg: Wind's u-component on staged ("half") grid in Lambert conformal
         :type ustg:
-        :param vstg: wind's v-component on staged ("half") grid in Lambert conformal
+        :param vstg: Wind's v-component on staged ("half") grid in Lambert conformal
         :type vstg:
         :param ustg_dim: Dimension name of staged u-component
         :type ustg_dim: