np.mean
https://numpy.org/doc/stable/reference/generated/numpy.mean.html

np.std

Var Name: #YY  MM DD hh mm WDIR WSPD GST  WVHT   DPD   APD MWD   PRES  ATMP  WTMP  DEWP  VIS  TIDE
Units:    #yr  mo dy hr mn degT m/s  m/s     m   sec   sec degT   hPa  degC  degC  degC   mi    ft

DEWP, VIS, & TIDE are always missing, so they were removed from the data set