Pregnancy period | Mean (μg/m3) | Percentiles (μg/m3) | Pearson's correlation (r) between periods | ||||
---|---|---|---|---|---|---|---|
25 | 50 | 75 | First trimester | Second trimester | Third trimester | ||
First trimester | 37.9 | 28.2 | 38.1 | 48.5 | |||
Second trimester | 35.9 | 26.5 | 35.2 | 44.2 | 0.69* | ||
Third trimester | 37.0 | 27.3 | 37.0 | 46.1 | 0.34* | 0.65* | |
Whole pregnancy | 36.9 | 29.4 | 37.9 | 45.6 | 0.80* | 0.92* | 0.83* |