beta_700nm cdom chlorophyll_a conductivity crs ctd41cp_timestamp density depth flbbcd_timestamp instrument_ctd instrument_echosounder instrument_flbbcdslc instrument_optode latitude longitude m_pitch m_roll m_science_clothesline_lag oxygen_saturation platform potential_temperature pressure profile_id profile_lat profile_lon profile_time rinkoii_water_temperature salinity sci_echosndr853_ping_count sci_m_disk_free sci_m_present_time sci_rinkoii_voltage sci_water_pressure sound_speed source_file temperature time trajectory u v water_depth