ຂໍ້ມູນຄຸນນະພາບອາກາດສະໜອງໃຫ້ໂດຍ: Atmo en Hauts-de-France - Pas-de-Calais (atmo-hdf.fr)
Note that the measurement for O3 (ozone) are taken from the station: Marcq-en-Baroeul, Nord-Pas-de-Calais and the measurements for SO2 (sulfur dioxide) and CO (carbon monoxide) are taken from the station: Lille Fives, Nord-Pas-de-Calais