It is data from Sailbuoy "Ocean Acidification Vehicle" (OAV) a.k.a. SB Iskant. A new sensor package developed by Aanderaa Data Instruments was used to measure temperature, conductivity, pH, partial pressure of carbon dioxide (pCO2), and dissolved oxygen (O2). Most of the sensors were housed in a bulb on the keel of the SailBuoy together with a UV-antifouling device. Data were recorded in the Fram Strait every 10 min. from 30 June 2016 to 18 July 2016.