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Air Quality Data provided by the Pima County Department of Environmental Quality Air (pima.gov)
Note that the measurements for PM2.5 (тонкодисперсных частиц), O3 (озон), CO (окись углерода) and NO2 (диоксида азота) are taken from the station Rose Elementary, Pima County and the measurement for and SO2 (сернистый газ) are taken from the station Childrens Park NCore, Pima County