ការព្យាករណ៍គុណភាពខ្យល់
ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ the Air Pays de la Loire (airpl.org)
Note that the measurement for SO2 (sulfur dioxide) are taken from the station: Camee, Montoir-De-Bretagne, Loire and the measurement for CO (carbon monoxide) are taken from the station: Plessis, la Basse-Loire, Loire