Dados de qualidade do ar fornecidos por: 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 Tokyo, Japan Environment Agency (東京都環境局) (kankyo.metro.tokyo.lg.jp) and 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.taiki.go.jp)