beta_700nm beta_700nm_reference beta_700nm_signal cdom chlorophyll_a conductivity crs ctd41cp_timestamp density depth glider_altitude instrument_ctd instrument_flbbcdslc instrument_microrider latitude longitude m_pitch m_roll platform potential_temperature pressure profile_id profile_lat profile_lon profile_time salinity sci_flbbcd_chlor_ref sci_flbbcd_chlor_sig sci_flbbcd_therm sci_m_disk_free sci_m_present_time sci_water_pressure sci_x_disk_files_removed sound_speed source_file temperature time trajectory u v water_depth