ການພະຍາກອນຄຸນນະພາບອາກາດ

Note that the measurements for SO2 (sulfur dioxide) and O3 (ozone) are taken from the station: Takeyamacho, Ichinoseki, Iwate and the measurement for CO (carbon monoxide) are taken from the station: Tsukidatefujiki, Kurihara-shi, Miyagi-ken







