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Air Quality Data provided by the Bureau of Air Quality, Pennsylvania's Department of Environmental Protection (dep.pa.gov)
Note that the measurements for PM2.5 (тонкодисперсных частиц), PM10 (вдыхаемых твердых частиц) and O3 (озон) are taken from the station Lawrenceville, Allegheny, Pennsylvania and the measurement for and CO (окись углерода) are taken from the station Glassport High Street, Allegheny, Pennsylvania