Table 2.

Prenatal exposure to ambient air pollutants and industrial air pollutant emissions.

Air pollutant	Mean	SD	Percentiles of the distribution
			Min.	25th	50th	75th	95th	99th	Max.
Mean annual ambient concentration, estimated from satellite-based and land-use regression models
Ambient ${\mathrm{PM}}_{2.5}$ (${\mathrm{\mu }\mathrm{g}/\mathrm{m}}^3$)	6.79	2.11	0.95	5.03	6.80	8.80	9.70	10.33	14.20
Ambient ${\mathrm{NO}}_2$ (${\mathrm{\mu }\mathrm{g}/\mathrm{m}}^3$)	11.16	7.42	0.54	4.92	8.97	16.86	24.65	30.25	51.01
Mean annual ambient concentration from industrial emissions, estimated from dispersion modeling
Industrial ${\mathrm{PM}}_{2.5}$ (${\mathrm{\mu }\mathrm{g}/\mathrm{m}}^3$)	0.19	0.23	0	0.10	0.17	0.24	0.39	0.73	17.83
Industrial ${\mathrm{NO}}_2$ (${\mathrm{\mu }\mathrm{g}/\mathrm{m}}^3$)	1.14	0.91	0	0.50	0.96	1.58	2.72	3.95	33.47
Industrial ${\mathrm{SO}}_2$ (${\mathrm{\mu }\mathrm{g}/\mathrm{m}}^3$)	2.28	1.86	0	1.22	2.03	2.94	5.07	8.23	89.10

Note: Prenatal exposures correspond to annual average concentrations of air pollutants assigned using calendar year of birth and the six-digit residential postal code at time of delivery. Max., maximum; Min., minimum; ${\mathrm{NO}}_2$, nitrogen dioxide; ${\mathrm{PM}}_{2.5}$, fine particulate matter; SD, standard deviation; ${\mathrm{SO}}_2$, sulfur dioxide.