TABLE 4.
Median bias and 82% interval (5th lowest value, 5th highest value from the 50 simulations) in the estimated regression coefficients (per IQR increase in pollutant concentration) for each of the three daily pollutant metrics compared to the specified effect.
| Central Monitor Metric | Population-weighted Average Metric | Unweighted Average Metric | ||||
|---|---|---|---|---|---|---|
| Median Bias | 82% Interval | Median Bias | 82% Interval | Median Bias | 82% Interval | |
| NO2 | −32.8% | (−38.2%, −27.7%) | −16.9% | (−20.2%, −13.9%) | −14.7% | (−18.2%, −12.0%) |
| NOx | −32.3% | (−35.2%, −29.0%) | −13.6% | (−15.2%, −11.4%) | −11.2% | (−13.8%, −8.9%) |
| CO | −35.9% | (−41.3%, −32.6%) | −12.5% | (−15.3%, −10.2%) | −16.1% | (−18.7%, −13.4%) |
| SO2 | −62.6% | (−64.2%, −60.4%) | −38.3% | (−40.7%, −35.9%) | −35.3% | (−37.7%, −32.5%) |
| O3 | −9.1% | (−13.8%, −3.0%) | −2.7% | (−5.5%, 1.4%) | −3.5% | (−5.9%, −0.1%) |
| PM10 | −25.1% | (−29.0%, −21.3%) | −11.5% | (−14.9%, −10.0%) | −10.1% | (−12.8%, −8.3%) |
| PM2.5 | −23.5% | (−28.8%, −18.1%) | −7.0% | (−9.2%, −4.2%) | −5.5% | (−8.0%, −2.2%) |
| SO4 | −23.6% | (−28.1%, −19.5%) | −7.2% | (−10.4%, −5.5%) | −1.7% | (−4.3%, 0.6%) |
| NO3 | −19.5% | (−22.5%, −17.7%) | −5.7% | (−7.0%, −4.3%) | −5.5% | (−6.8%, −4.3%) |
| NH4 | −19.3% | (−24.6%, −15.3%) | −9.4% | (−11.8%, −7.6%) | −2.1% | (−4.8%, −0.9%) |
| EC | −33.3% | (−37.5%, −29.5%) | −10.9% | (−12.2%, −9.0%) | −10.7% | (−12.8%, −8.6%) |
| OC | −22.7% | (−27.6%, −18.7%) | −10.3% | (−12.6%, −7.8%) | −6.3% | (−8.9%, −4.3%) |
Abbreviations: 1-hr maximum nitrogen dioxide (NO2), nitrogen oxides (NOx), carbon monoxide (CO), and sulfur dioxide (SO2); 8-hr maximum ozone (O3); and 24-hr average particulate matter less than 10 microns in diameter (PM10), particulate matter less than 2.5 microns in diameter (PM2.5), PM2.5 sulfate (SO4) , PM2.5 nitrate (NO3), PM2.5 ammonium (NH4), PM2.5 elemental carbon (EC), and PM2.5 organic carbon (OC).