Table 2 Distribution of mean air pollutants and meteorological factors during pregnancy (n = 490)
Air pollutant | N | Min | Median | IQR | Mean | SD | 10th Percentile | 90th Percentile | Max |
|---|---|---|---|---|---|---|---|---|---|
PM2.5 (μg/m3) | 489 | 7.6 | 11.9 | 1.7 | 12.0 | 1.1 | 10.5 | 13.4 | 17.6 |
PM10 (μg/m3) | 489 | 18.1 | 28.2 | 7.5 | 28.5 | 4.7 | 22.4 | 34.7 | 45.2 |
NO2 (ppb) | 489 | 8.2 | 16.5 | 3.7 | 16.4 | 2.9 | 12.9 | 20.4 | 24.5 |
O3 (ppb) | 489 | 19.0 | 25.9 | 4.2 | 26.2 | 2.9 | 23.1 | 29.6 | 41.5 |
Temperature (°C) | 489 | 10.1 | 19.3 | 1.8 | 19.2 | 1.4 | 17.4 | 20.7 | 22.5 |
Relative humidity (%) | 489 | 42.8 | 62.1 | 5.4 | 61.6 | 4.1 | 56.3 | 66.4 | 70.9 |