Table 2.
Correlations for exposures assigned to eligible respiratory EDVsa in California, 2005–2008.
| Maximum daily 1-hr O3 (ppb)b | Mean daily apparent temperature (°F)c | Maximum daily 1-hr CO (ppm)b | Maximum daily 1-hr NO2 (ppb)b | Maximum daily 1-hr SO2 (ppb)b | |
|---|---|---|---|---|---|
| Full year data | |||||
| Maximum daily 1-hr O3 (ppb) | 1 | 0.63 | –0.28 | –0.01 | –0.06 |
| Mean apparent temperature (°F) | 1 | –0.17 | 0.06 | 0.07 | |
| Maximum daily 1-hr CO (ppm) | 1 | 0.62 | 0.27 | ||
| Maximum daily 1-hr NO2 (ppb) | 1 | 0.24 | |||
| Maximum daily 1-hr SO2 (ppb) | 1 | ||||
| Warm season (May–October) data | |||||
| Maximum daily 1-hr O3 (ppb) | 1 | 0.57 | 0.02 | 0.26 | 0.02 |
| Mean apparent temperature (°F) | 1 | 0.04 | 0.25 | 0.11 | |
| Maximum daily 1-hr CO (ppm) | 1 | 0.66 | 0.22 | ||
| Maximum daily 1-hr NO2 (ppb) | 1 | 0.21 | |||
| Maximum daily 1-hr SO2 (ppb) | 1 | ||||
| Abbreviations: 1-hr, 1 hour; ppb, parts per billion; ppm, parts per million. aHaving a population-weighted ZIP code centroid located within 20 km of a monitor for the gas pollutants, 10 km for temperature. bMeasures provided by CARB (2011). cMeasures provided by U.S. EPA (2009), National Climatic Data Center (2011), or California Department of Water Resources (2010). | |||||