HEADING            UNITS         DESCRIPTION

JulDay             dec_day       Julian day
Date               day-mo-yr     Date
Time               hr:min        Time (GMT)
Lat                degrees       Latitude in decimal degrees
Long               degrees       Longitude in decimal degrees
Water_XCO2         ppm           mole fraction of CO2 in air
Air_XCO2           ppm           mole fraction of CO2 in water
EquilT             oC            Temperature in equilibrator
Pressure           mBar          Barometric pressure
SST                oC            Sea surface temperature (at bow intake)
TSG_SAL            psu           Salinity at bow intake
fCO2equil          uatm          Fugacity of CO2 in equailibrator
Water_fCO2         uatm          Fugacity of CO2 corrected to SST
Air_fCO2           uatm          Fugacity of CO2 in air
fCO2              uatm           Water-air difference
