대기질 예보
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대기질 데이터 제공: 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) and the Ibaraki Prefecture EPA (茨城県大気汚染常時監視システム) (taiki.pref.ibaraki.jp)
Note that the measurement for SO2 (sulfur dioxide) are taken from the station: Tenjin, Konosu, Saitama