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Figure 4 | International Journal of Health Geographics

Figure 4

From: Statistical air quality predictions for public health surveillance: evaluation and generation of county level metrics of PM2.5for the environmental public health tracking network

Figure 4

PM2.5annual average concentration by counties. Concentration (μg/m3). “Yellow rectangle = 2.5-8.7: “green rectangle” = 8.8-11.5: “light blue rectangle” = 11.6-15.0: “purple rectangle” = 15.1-22.1: “white rectangle” = No data: “red broken line” = San Joaquin Valley.

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International Journal of Health Geographics

ISSN: 1476-072X