ການພະຍາກອນຄຸນນະພາບອາກາດ
ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: the Air Pays de la Loire (airpl.org)
Note that the measurement for O3 (ozone) are taken from the station: Bouteillerie, Nantes, Loire and the measurement for CO (carbon monoxide) are taken from the station: Freres Goncourt, Nantes, Loire