Aviation Digital Data Service (ADDS)

Output produced by METARs form (1014 UTC 21 November 2014)
found at http://aviationweather.gov/adds/metars/
 
KGNV 210520Z 2106/2206 00000KT P6SM SCT250 
     FM211400 04010KT P6SM SCT250 
     FM212300 05007KT P6SM SCT030 BKN250