Table 1.
Exposures concentrations, particle size and chamber and ambient weather conditions
| Exposure dates | Summer exposures | Winter exposures | ||||||
|---|---|---|---|---|---|---|---|---|
| Air | CAPs | O 3 | CAPs + O 3 | Air | CAPs | O 3 | CAPs + O 3 | |
| 23 Aug11 | 17 Aug11 | 23 Aug11 | 17 Aug11 | 5 Mar12 | 28 Feb12 | 05 Mar12 | 28 Feb12 | |
| 2 Aug11 | 18 Aug11 | 24 Aug11 | 18 Aug11 | 6 Mar12 | 29 Feb12 | 06 Mar12 | 29 Feb12 | |
| 7 Mar12 | 7 Mar12 | |||||||
| O3 (ppb) | 5.8 | 4.8 | 197.1 | 203.1 | 2.5 | 10.5 | 199.4 | 198.3 |
| PM Mass (μg/m 3 ) | --- | 168.7 | --- | 174.9 | --- | 78.5 | --- | 91.3 |
| Particle Size (nm) | --- | 333.4 | --- | 315.0 | --- | 125.5 | --- | 125.0 |
| Geometric Mean | --- | 316.1 | --- | 295.8 | --- | 125.5 | --- | 125.0 |
| Mode | --- | 316.1 | --- | 295.8 | --- | 125.5 | --- | 125.0 |
| Geometric SD | --- | 1.96 | --- | 1.97 | --- | 1.95 | --- | 2.02 |
| Chamber Temp (F) | 72.6 | 72.5 | 70.8 | 70.4 | 73.6 | 72.3 | 71.2 | 69.6 |
| Chamber RH (%) | 51.3 | 50.3 | 51.3 | 56.5 | 46.7 | 42.6 | 51.0 | 47.1 |
| Ambient Temp (F) | 77.5 | 80 | 77.5 | 80 | 44.8 | 55.5 | 44.8 | 55.5 |
| Ambient RH (%) | 55 | 69.5 | 55 | 69.5 | 45.8 | 68.2 | 45.8 | 68.2 |