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Pearson correlation coefficients for mean pollutant concentrations, relative humidity, and temperature during 1st trimester of pregnancy for 2008 and 2009 (n=56,155)
| PM 10 | SO2 | NO2 | Relative Humidity | Temperature | |
|---|---|---|---|---|---|
| PM10 | 1.00 | -- | -- | -- | -- |
| SO2 | 0.39 | 1.00 | -- | -- | -- |
| NO2 | 0.41 | 0.76 | 1.00 | -- | -- |
| Relative Humidity | −0.43 | −0.80 | −0.69 | 1.00 | -- |
| Temperature | −0.34 | −0.95 | −0.84 | 0.79 | 1.00 |
