
Lưu ý phép đo PM 2.5 (hạt bụi mịn) được lấy từ trạm: 7th Ave, Marysville, Washington and the measurement for O3 (ozone) are taken from the station: S Second St, Mt Vernon, Washington and the measurement for CO (carbon monoxide) are taken from the station: Town Center, Lake Forest Park, Washington







