Aviation Digital Data Service (ADDS)

Output produced by METARs form (0000 UTC 22 October 2014)
found at http://aviationweather.gov/adds/metars/
 
KORD 212327Z 2200/2306 01009KT P6SM OVC025 
     FM220300 03008KT P6SM SCT025 
     FM220500 04005KT P6SM FEW025 
     FM221400 08006KT P6SM SKC 
     FM230300 14005KT P6SM SKC