ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム) (soramame.env.go.jp)
Note that the measurement for SO2 (sulfur dioxide) are taken from the station: Shimoigusa, Suginami, Tokyo