ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Czech Hydrometeorological Institute (Český hydrometeorologický ústav) (portal.chmi.cz)
Note that the measurements for PM2.5 (fine particulate matter) and PM10 (respirable particulate matter) are taken from the station: CZ:Liberecky/Horni Vitkov and the measurement for NO2 (nitrogen dioxide) are taken from the station: Liberec Rochlice, Liberecky