c_wpt_lat c_wpt_lon crs depth instrument_bb2fls instrument_ctd instrument_optode latitude longitude m_depth m_gps_lat m_gps_lon m_lat m_lon m_present_secs_into_mission m_present_time m_water_cond m_water_pressure m_water_temp m_water_vx m_water_vy platform pressure sci_m_present_secs_into_mission sci_m_present_time sci_oxy3835_oxygen sci_oxy3835_temp sci_oxy3835_timestamp sci_water_cond sci_water_pressure sci_water_temp source_file time trajectory