{"metadata": {"columns": ["date", "dec_lat", "dec_lon", "spd", "hdt", "cnav_cog", "sog", "wxtp_ta", "wxts_ta", "wxtp_pa", "wxts_pa", "wxtp_ri", "wxts_ri", "wxtp_rc", "wxts_rc", "wxtp_dm", "wxts_dm", "wxtp_sm", "wxts_sm", "wxtp_ua", "wxts_ua", "wxtp_ts", "wxts_ts", "wxtp_td", "wxts_td", "barom_p", "barom_s", "rad_sw", "rad_lw", "par", "sbe45s", "sbe48t", "flr", "flow", "trans25_ref", "trans25_sig", "trans25_sigcor", "trans25_calc", "trans25_therm", "trans10_ref", "trans10_sig", "trans10_sigcor", "trans10_calc", "trans10_therm", "ssvdslog", "depth12", "depth35", "em124", "em712"], "num_columns": 49}, "data": null}