Ambient pollution and meteorological variables during breath sampling
| Pollutant | No | Mean | Max | Percentile | Interquartile range | |
|---|---|---|---|---|---|---|
| 25th | 75th | |||||
| *Single samples collected from the study room coincident with each breath sampling. | ||||||
| PM2.5 (μg/m3) | ||||||
| 1 hour mean | 261 | 19.5 | 105.8 | 7.6 | 25.5 | 17.9 |
| 24 hour mean | 291 | 19.7 | 57.8 | 9.7 | 27.4 | 17.7 |
| Ambient NO (ppb) | ||||||
| 1 hour mean | 216 | 15.0 | 215.3 | 1.6 | 16.1 | 14.5 |
| 24 hour mean | 244 | 11.2 | 70.7 | 2.3 | 14.2 | 11.9 |
| Indoor NO (ppb) | ||||||
| Study room* | 293 | 24.4 | 137.2 | 2.9 | 32.6 | 29.6 |
| NO2 (ppb) | ||||||
| 1 hour mean | 140 | 9.2 | 32.9 | 4.7 | 12.8 | 8.1 |
| 24 hour mean | 179 | 10.9 | 23.8 | 7.3 | 14.6 | 7.3 |
| O3 (ppb) | ||||||
| 1 hour mean | 236 | 19.8 | 61.6 | 8.6 | 27.5 | 18.9 |
| 24 hour mean | 265 | 15.3 | 32.2 | 9.7 | 20.2 | 10.6 |
| SO2 (ppb) | ||||||
| 1 hour mean | 252 | 14.8 | 233.9 | 3.7 | 15.2 | 11.5 |
| 24 hour mean | 287 | 12.5 | 50.9 | 5.4 | 16.9 | 11.5 |
| Temperature (°C) | ||||||
| 24 hour mean | 299 | 7.0 | 19.4 | 1.4 | 13.1 | 11.6 |