ការព្យាករណ៍ខ្យល់
ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the Sistema Nacional de Calidad del Aire en Chile (sinca.mma.gob.cl)
Note that the measurements for PM2.5 (fine particulate matter) and PM10 (respirable particulate matter) are taken from the station: U.C. Maule