Date/Time_(UTC)     Vmax(kts)    mperc-Prob-SEF   vmax-only-Prob-SEF
2021-07-08 18:00:00      15.0    00%              00%
2021-07-08 19:00:00       NaN    00%              00%
2021-07-08 20:00:00       NaN    00%              00%
2021-07-08 21:00:00       NaN    00%              00%