ការព្យាករណ៍គុណភាពខ្យល់
ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the South Air Korea Environment Corporation (대기오염실시간공개시스템) (airkorea.or.kr)
Note that the measurements for O3 (ozone), NO2 (nitrogen dioxide), SO2 (sulfur dioxide) and CO (carbon monoxide) are taken from the station: Bieungdo-dong, Jeonbuk