Table 3.

Parameter estimates for intake fraction regressions for different pollutants.

Dependent Variable	Independent Variables		R2
	Population within 50 km of the airport	Product of Population and annual average mixing height (m)
Benzene iF	8.18 × 10-12 (<0.0001)	-7.05 × 10-15 (<0.0001)	0.95
1,3-butadiene iF	4.78 × 10-12 (<0.0001)	-4.19 × 10-15 (<0.0001)	0.93
BaP iF	7.69 × 10-12 (<0.0001)	-6.59 × 10-15 (<0.0001)	0.95

P-values are listed below regression coefficients.