Table 2.
Pairwise Correlation Coefficients for Roadside Hourly Pollutant Concentrations and Selected Environmental Factors, During Periods When Wind Originated from the East
| Species / Factor | Temp (°F) | RH (%) | 1/Mixing Height | Traffic Count | Wind Speed | Traffic Count/Mixing Height |
|---|---|---|---|---|---|---|
| NO (ppb) | 0.00 | 0.22 | 0.28 | 0.00 | 0.39 | 0.00 |
| NO2 (ppb) | 0.10 | 0.00 | 0.41 | 0.00 | 0.69 | 0.10 |
| CO (ppb) | 0.10 | 0.00 | 0.22 | 0.00 | 0.49 | 0.10 |
| O3 (ppb) | 0.53 | 0.57 | 0.57 | 0.30 | 0.45 | 0.53 |
| BC (μg/m3) | 0.10 | 0.22 | 0.30 | 0.00 | 0.49 | 0.10 |
| IMSI | 0.00 | 0.30 | 0.40 | 0.00 | 0.58 | 0.00 |