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Descriptive statistics for prior one-year exposure to coarse particulate matter (PM10–2.5) concentrations (μg/m3) for SWAN sites, 1999–2004
| Site | N | Mean | SD | Median | IQR |
|---|---|---|---|---|---|
| All sites | 5175 | 10.9 | 3.6 | 11.5 | 4.0 |
| By site | |||||
| Detroit, MI | 719 | 10.6 | 3.5 | 10.3 | 3.9 |
| Chicago, IL | 1296 | 12.1 | 1.9 | 12.0 | 2.4 |
| Oakland, CA | 1229 | 10.9 | 1.8 | 11.6 | 2.2 |
| Los Angeles, CA | 209 | 17.5 | 2.3 | 18.4 | 1.6 |
| Newark, NJ | 366 | 12.4 | 4.9 | 12.8 | 5.7 |
| Pittsburgh, PA | 1356 | 8.5 | 3.8 | 7.4 | 6.8 |
