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salinity | | calculated CTD salinity

oxygen sensor | µmol/kg | Oxygen concantration as recorded by the CTD sensor. The data are calibrated with Winkler titrated samples.

chl2_raw | | flourescence from Wetlabs Fluorometer (serial # FLNTURTD-2928)

chlorophyll a | µg/L |	calculated chlorophyll concentration using calibration coefficents from Wetlabs

potential density [kg/m3]	QF	oxygen titrated [mmol/kg]		turb_raw	QF	NO3 [µM/L]	QF	NO2 corr. [µM/L]		PO4 [µM/L]		SiO2 [µM/L]	

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 |

oxygen titrated | umol/kg | oxygen concebtration determined by Winkler titration on board

turb_raw | | turbidity data raw from Wetlabs fluorometer

NO3 | µM/L |	nitrate concentration, calibration solution was too low, so some samples are off scaleQF	NO2 corr. [µM/L]		PO4 [µM/L]		SiO2 [µM/L]