Table 1.
Summary of Available Daily Particulate Matter Concentrations at the 3 Primary Monitoring Sites (January 1993 to September 2014)
| Monitoring Sites | n | Mean | SD | Maximum | Median | IQR |
|---|---|---|---|---|---|---|
| Ogden | ||||||
| PM2.5 monitored | 3443 | 9.9 | 9.2 | 108 | 7.2 | 5.0–10.7 |
| +imputed | 7698 | 10.6 | 9.1 | 108 | 7.9 | 5.8–11.5 |
| Salt Lake City, Hawthorne | ||||||
| PM2.5 monitored | 5668 | 10.6 | 11.0 | 94 | 7.0 | 5.0–10.9 |
| +imputed | 7855 | 10.5 | 10.4 | 94 | 7.2 | 5.0–11.0 |
| Provo/Orem, Lindon | ||||||
| PM2.5 monitored | 5415 | 10.0 | 10.2 | 123 | 6.9 | 4.8–10.8 |
| +imputed | 7697 | 10.7 | 10.8 | 123 | 7.4 | 5.1–11.7 |
IQR indicates interquartile range; PM2.5, fine particulate matter ≤2.5 μm in aerodynamic diameter.