ISFET pH data from Ferrybox on Helsinki-Travemünde route.
Ferrybox ISFET sensor pH data from cargo vessel \"Finnmaid\" traversing between Helsinki and Travemünde every three days.\n\ncdm_data_type = Other\nVARIABLES:\ntime (seconds since 1970-01-01T00:00:00Z)\npH_pH (P H P H)\nTemperature_degC (Temperature Deg C)\nRawValuePH_mV (Raw Value PH M V)\nlatitude (degrees_north)\nlongitude (degrees_east)\nFlow_LPM\nSerial_number\n