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## this folder contains various raw data

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#[POS519_UW_dship.dat](https://git.geomar.de/tobias-steinhoff/Poseidon-POS519/blob/master/data%20processing/data/POS519_UW_dship.dat):

underway data from ships system
variable | unit | description 
:--- | :--- | :--- 
Excel time | | 
matlab time | | 
SYS.STR.Course | deg | course over ground
SYS.STR.HDG | deg | ship's heading
SYS.STR.PosLat | deg N | Latitude 
SYS.STR.PosLon | deg E | Longitude
TSG.SBE21.Salinity | PSU | salinity calculated from conductivity with ship's thermosalinograph [SBE21](https://www.seabird.com/)
TSG.SBE21.t68extern | degC | seawater temperature at water intake, SBE38
TSG.SBE21.t68 | degC | seawater temperature inside SBE21
Weather.PDWDA.WindDir_true | deg | true wind direction
Weather.PDWDA.WindSpeed_true | m/s | true wind speed
Weather.PDWDA.Air_pressure | mbar | air pressure
Weather.PDWDA.Humidity | % | humidity
Weather.PDWDA.WindDir_rel | deg | wind direction, relative to the ship
Weather.PDWDA.WindSpeed_rel | m/s | wind speed, relative to the ship