SITE        Station name
EPOCH       Observation Date (yy:doy:ssss)
TRODRY      Dry zenith path delay [mm] (A priori value)
TROWET      Estimated wet zenith path delay [mm]
STDDEV*     Standard deviation (95%)of the estimated Wet zenith delay [mm]. 
TGNTOT      Estimated North Tropospheric Gradient [mm]
STDDEV*     Standard deviation (95%)of TGNTOT [mm]
TGETOT      Estimated East Tropospheric Gradient [mm]
STDDEV*     Standard deviation (95%)of TGETOT [mm]

(*) Sigmas are scaled by a time correlation factor (for static mode only)