{"metadata": {"columns": ["date", "datetimeiso", "dec_lat", "dec_lon", "chl_ugl", "turb_ntu", "water_temperature_degree_c", "conductivity_sm", "salinity_psu", "heading", "heading_type", "roll_deg", "pitch_deg", "heave_m", "course_true_deg", "sog_kts", "sog_kmh", "wind1_rel_dir_deg", "wind1_speed_kt", "wind1_true_dir_deg", "wind1_true_speed_kt", "wind2_rel_dir_deg", "wind2_speed_kt", "wind2_true_dir_deg", "wind2_true_speed_kt", "air_temperature_degree_c", "relative_humidity_percent", "barometric_pressure_hpa"], "num_columns": 28}, "data": null}