Table 2.

Summary statistics of pollutant and weather exposures during pregnancy

	Mean	Median	Standard deviation	25th percentile	75th percentile	Interquartile Range
Potassium (K) (µg/m3)	49.4×10−3	49.2×10−3	5.0×10−3	46.1×10−3	52.3×10−3	6.4×10−3
Titanium (Ti) (µg/m3)	5.3×10−3	4.8×10−3	1.6×10−3	4.1×10−3	6.6×10−3	2.6×10−3
PM2.5 total mass (µg/m3)	14.0	13.5	2.13	12.3	16.0	3.69
Temperature (°F)	50.5	51.1	6.2	45.3	56.1	10.8
Dew point temperature (°F)	40.2	40.7	6.2	34.9	46.0	11.1
Apparent Temperature (°F)	56.4	61.1	25.0	42.9	68.7	25.8