Table 3.

Model-based estimates of the percentage of occupants that would be exposed to a time-averaged concentration exceeding an acute health-based pollutant standard during a typical winter week.

Age group	Percentage of SoCal population (%)	NO2 (k = 1.05/hr)	NO2 (k = 0.5/hr)	CO		HCHO
		1-hr (%)	1-hr (%)	1-hr (%)	8-hr (%)	1-hr (%)	8-hr (%)
No hood, differences by proximity
0–5	11.4	72 ± 6	80	11 ± 4	11 ± 3	29 ± 6	57 ± 6
6–18	21.8	53 ± 4	63	6 ± 3	7 ± 2	21 ± 4	50 ± 5
19–64	58.5	63 ± 2	74	9 ± 1	9 ± 2	26 ± 4	53 ± 3
≥ 65	8.23	65 ± 3	76	9 ± 2	8 ± 2	26 ± 7	53 ± 3
Cook	30.5	76 ± 2	83	13 ± 1	11 ± 2	33 ± 4	57 ± 2
No hood, no differences by proximity
0–5	11.4	58	74	8	9	27	56
6–18	21.8	54	66	7	8	25	52
19–64	58.5	54	69	8	9	25	53
≥ 65	8.23	47	66	4	7	21	48
Cook	30.5	54	70	8	8	25	53
With hood, differences by proximity
0–5	11.4	34	50	3	3	17	34
6–18	21.8	15	25	1	3	14	31
19–64	58.5	29	38	3	3	15	32
≥ 65	8.23	27	40	1	1	11	29
Cook	30.5	43	52	4	3	18	35
Age group includes cook as a separate class. First two groups of results assume no range hood use; middle group assumes no proximity effect. Summary statistics for scenario 1 (only for ki = 1.05/hr for NO2) are presented as a mean ± range to indicate the variation across the 15 replicate runs that resulted from reassigning parameter values. The range is the difference between the mean value and the run with the largest difference, higher or lower, than the mean value.