pressure | dbar | CTD pressure reading in dbar |[info](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/docs/pos_519_1_report.txt)
temperature | degC | CTD temperature reading |[info](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/docs/pos_519_1_report.txt)
oxygen sensor | µmol/kg | Oxygen concantration as recorded by the CTD sensor. The data are calibrated with Winkler titrated samples. |[info](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/docs/pos_519_1_report.txt)
chlorophyll a | µg/L | calculated chlorophyll concentration using | [calibration coefficents from Wetlabs](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/docs/FLNTURTD-2928.Charsheet-1.pdf)
potential density | kg/m3 | |
potential density | kg/m3 | |[info](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/docs/pos_519_1_report.txt)
oxygen titrated | umol/kg | oxygen concebtration determined by Winkler titration on board |
turb_raw | | turbidity data raw from Wetlabs fluorometer |
turb_raw | | turbidity data raw from Wetlabs fluorometer |[info](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/docs/pos_519_1_report.txt)
NO3 | µM/L | nitrate concentration, calibration solution was too low, so some samples are off scale -> QF=3 |
NO2 corr. | µM/L | nitrite concentration |
PO4 | µM/L| phospate concentration, calibration solution was too low, so some samples are off scale -> QF=3 |
