fix a VRB-bug

aman/com/DwdCrawler.py

@@ -57,7 +57,10 @@ class DwdCrawler():
             altitude = int(altitude.replace('FL', '')) * 100
         else:
             altitude = int(altitude.replace('FT', ''))
-        row = ( altitude, int(windData[0]), int(windData[1].replace('KT', '')) )
+        if 'VRB' == windData[0]:
+            row = ( altitude, 0, int(windData[1].replace('KT', '')) )
+        else:
+            row = ( altitude, int(windData[0]), int(windData[1].replace('KT', '')) )
         table.append(row)
 
         return table