000 FTUS41 KBOX 171720 TAFBAF TAF KBAF 171720Z 1718/1818 18004KT P6SM BKN060 FM180000 17007KT P6SM VCSH OVC050 FM180400 14006KT P6SM -SHRA OVC030 FM181000 06007KT P6SM VCSH OVC020 FM181400 07007KT P6SM VCSH OVC035=