Table 2.
Summary statistics of hourly air pollution and weather conditions during 2009–2013 in Brisbane, Australia.
| Variables | Mean ± SD | Percentile | ||||
|---|---|---|---|---|---|---|
| 5th | 25th | 50th | 75th | 95th | ||
| PM2.5 (μg/m3) | 6.32 ± 4.05 | 3.20 | 4.35 | 5.55 | 7.24 | 11.10 |
| PM10 (μg/m3) | 17.27 ± 15.33 | 9.78 | 13.08 | 15.79 | 18.94 | 26.29 |
| NO2 (ppb) | 6.52 ± 3.50 | 2.47 | 4.00 | 5.58 | 8.25 | 13.63 |
| SO2 (ppb) | 1.95 ± 3.26 | 0.42 | 0.75 | 1.15 | 2.00 | 5.36 |
| O3 (ppb) | 17.27 ± 8.59 | 5.33 | 10.56 | 16.11 | 23.00 | 32.89 |
| CO (ppb) | 219.30 ± 135.53 | 50.00 | 120.00 | 200.00 | 300.00 | 450.00 |
| Temperature (°C) | 21.97 ± 4.83 | 13.25 | 18.78 | 22.48 | 25.46 | 29.24 |
| Relative humidity (%) | 70.82 ± 14.31 | 44.99 | 60.66 | 73.18 | 82.34 | 90.16 |
| Abbreviations: CO, carbon monoxide; NO2, nitrogen dioxide; O3, ozone; PM2.5, particulate matter ≤ 2.5 μm in diameter; PM10, particulate matter ≤ 10 μm in diameter; ppb, parts per billion; SD, standard deviation; SO2, sulfur dioxide. | ||||||