Aviation Digital Data Service (ADDS)

Output produced by METARs form (2324 UTC 03 September 2015)
found at http://aviationweather.gov/adds/metars/
 
KSLK 032320Z 0400/0424 05004KT P6SM FEW200 
     FM040600 00000KT 1/4SM FG VV001 
     FM041300 VRB03KT P6SM FEW250