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Fig. 1 | Environmental Health

Fig. 1

From: Air pollution and mortality in a large, representative U.S. cohort: multiple-pollutant analyses, and spatial and temporal decompositions

Fig. 1

Average concentrations of criteria pollutants by 2010 Census tracts in the continental U.S., 1999–2015. PM2.5, fine particulate matter (particles < 2.5 μm in aerodynamic diameter) in μg/m3; PM2.5–10, coarse fraction particulate matter (particles 2.5–10 μm in aerodynamic diameter) in μg/m3; SO2, sulfur dioxide in ppb; NO2, nitrogen dioxide in ppb; O3, ozone in ppb, mean for May–September of daily max of eight-hour moving average; CO, carbon monoxide in ppm

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