#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
2025 12 25 12 00  2.5   MM   MM  2.5   MM  MM  MM        N/A   MM -99
2025 12 25 06 00  2.5   MM   MM  2.5   MM  MM  MM        N/A   MM -99
2025 12 25 00 00  2.0   MM   MM  2.0   MM  MM  MM        N/A   MM -99
2025 12 24 18 00  2.5   MM   MM  2.5   MM  MM  MM        N/A   MM -99
2025 12 24 12 00  3.0   MM   MM  3.0   MM  MM  MM        N/A   MM -99