KSEA 090520Z 0906/1012 36008KT P6SM FEW100 SCT250 
  FM091100 02003KT P6SM SCT200 
  FM091800 36005KT P6SM BKN200 
  FM092200 29010KT P6SM BKN200 
  FM100700 03005KT P6SM BKN200