ការព្យាករណ៍គុណភាពខ្យល់
ទិន្នន័យគុណភាពខ្យល់ផ្តល់ដោយ៖ Arpa Emilia-Romagna (arpae.it)
Note that the measurement for O3 (ozone) are taken from the station: Parco Ferrari, Emilia Romagna and the measurement for CO (carbon monoxide) are taken from the station: Timavo, Emilia Romagna