beta_880nm cdom chlorophyll_a conductivity crs density depth instrument_bbfl2slo instrument_ctd_rbr instrument_dmon instrument_optode 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 sci_dmon_msg_byte_count sci_m_present_time sci_oxy3835_wphase_dphase sci_water_pressure sound_speed source_file temperature time trajectory u v water_depth