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Podatke o kvaliteti zraka obezbjeđuje: Atmo en Hauts-de-France - Pas-de-Calais (atmo-hdf.fr)
Imajte na umu da se mjerenja za PM 2,5 (fine čestice) uzimaju sa stanice: Douai Theuriet, Nord-Pas-de-Calais and the measurements for PM10 (respirable particulate matter), O3 (ozone), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide) are taken from the station: Denain, Nord-Pas-de-Calais