nc_uncertainty_p = 2.000000nc_uncertainty_t = 0.002000nc_uncertainty_s = 0.002000nc_uncertainty_o = 1.500000The oxygen calibration for this cruise is non-standard as it makes use of the knowledge that O2 concentrations in the core of the OMZ are very close to 0. Winkler titrations can not measure such low concentrations. Tritrations lower than 4 mumol/l have thus been replaced by 0. The resulting calibrations delivers CTD O2 concentrations close to 0 in the core of the OMZ. Profile 26 is somewhat peculiar as it shows some pronounced density inversions. Please use with caution.Fluorescence data still contain deck offsets. Use with caution