Aviation Digital Data Service (ADDS)

Output produced by METARs form (0146 UTC 20 October 2017)
found at http://aviationweather.gov/adds/metars/
 
KDCA 192320Z 2000/2024 20004KT P6SM FEW250 
     FM200800 31005KT P6SM FEW250 
     FM201300 34008KT P6SM FEW250