_id year_observed   day_observed   provider   station_code   pollutants   date_observed   date_insert   date_observed_txt   date_update   day_of_week   hour_observed   hour_observed_raw   latitude   longitude   month_observed   pollution_level   station_name   uniqueid   colspacer
year_observed day_observed provider station_code pollutants date_observed date_insert date_observed_txt date_update day_of_week hour_observed hour_observed_raw latitude longitude month_observed pollution_level station_name uniqueid