Table 2 Exposure characteristics on the day of the lung function test (lag 0), and one and two days before (lag 1 and 2)
Exposure, μg/m3 | Average ± sd | Min | Q1 | Q3 | Max | IQR |
|---|---|---|---|---|---|---|
PM10 | ||||||
Same-day (lag 0) | 24.9 ± 15.5 | 5 | 15 | 30 | 105 | 15 |
One day before (lag 1) | 24.3 ± 15.6 | 5 | 14 | 29 | 129 | 15 |
Two days before (lag 2) | 23.9 ± 15.4 | 5 | 14 | 27 | 129 | 13 |
NO2 | ||||||
Same-day (lag 0) | 23.1 ± 9.6 | 7 | 16 | 29 | 65 | 13 |
One day before (lag 1) | 21.2 ± 10.0 | 3 | 14 | 27 | 65 | 13 |
Two days before (lag 2) | 20.0 ± 10.1 | 3 | 12 | 25 | 65 | 13 |
O3 – warm season | ||||||
Same-day (lag 0) | 44.3 ± 19.0 | 3 | 30 | 58 | 104 | 28 |
One day before (lag 1) | 47.0 ± 18.7 | 3 | 34 | 61 | 104 | 27 |
Two days before (lag 2) | 46.6 ± 19.4 | 1 | 33 | 60 | 106 | 27 |