#YY  MM DD hh mm WVHT  SwH  SwP  WWH  WWP SwD WWD  STEEPNESS  APD MWD
#yr  mo dy hr mn    m    m  sec    m  sec  -  degT     -      sec degT
2018 11 05 17 20  0.5   MM   MM   MM   MM  MM  MM        N/A   MM -99
2018 11 05 17 10  0.7   MM   MM   MM   MM  MM  MM        N/A   MM 292
2018 11 05 17 00  1.2   MM   MM   MM   MM  MM  MM VERY_STEEP   MM 355
2018 11 05 16 50  1.3   MM   MM   MM   MM  MM  MM VERY_STEEP   MM 287