
Air Quality Data provided by the Hessian State Office for Nature Conservation, Environment and Geology - (Hessisches Landesamt für Naturschutz, Umwelt und Geologie) (hlnug.de)
Note that the measurement for and O3 (Ô-zôn) are taken from the station Marburg and the measurement for and SO2 (Khí SO2) are taken from the station DE:Hesse/Linden