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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 PM10 (吸入性粒子状物質) and O3 (オゾン) are taken from the station Harrisburg, Pennsylvania and the measurements for NO2 (二酸化窒素) and SO2 (二酸化硫黄) are taken from the station Arendtsville, Pennsylvania