Flow-through pCO2, pCH4 Temp/Sal, and O2 measurements in the western Baltic Sea during SCOR cruise (separate to the intercalibration exercise). Surface water flow-through sensor system set up on R.V. Elisabeth Mann Borgese (15.10.2016 - 22.10.2016). All sensors ran on the same water in a complete flow-through sensor set-up at a resolution of 1 minute. Depth of pumps: 3m Flow rate: ~ 5-6 L/min All data was processed following Canning et al., 2020 (In Review). Sensor data in separate files. Sensors: pCO2: CONTROS HydroC CO2 FT - formerly Kongsberg Maritime Contros GmbH, Kiel, Germany; now -4H-JENA engineering GmbH, Jena, Germany O2: CONTROS HydroFlash O2 - formerly Kongsberg Maritime Contros GmbH, Kiel, Germany SBE 45 Micro Thermosalinograph - Sea-Bird Electronics, Bellevue, USA Temperature, salinity, latitude and longitude included are also from the D-SHIP. Only half the cruise dataset for pCH4 due to internal issue with the sensor (see Canning et al., 2020).