beta_700nm cdom chlorophyll_a conductivity crs ctd41cp_timestamp density depth flbbcd_timestamp instrument_ctd instrument_flbbcdslc instrument_optode instrument_pH latitude longitude m_pitch m_roll m_science_clothesline_lag optode_water_temperature oxygen_concentration oxygen_saturation platform potential_temperature pressure profile_id profile_lat profile_lon profile_time salinity sbe41n_ph_electrode_current sbe41n_ph_electrode_voltage sbe41n_ph_ref_voltage sbe41n_ph_substrate_current sci_m_present_time sci_oxy4_calphase sci_water_pressure sound_speed source_file temperature time trajectory u v water_depth