Table 2.

Relative difference and absolute concentration errors for both annual and maximum 24-h averages because of home geocoding errors.

					Percentiles
Averages	Distance bin	Mean	SD	Min	25th	50th	75th	95th	98th	Max
Absolute concentration error (μg/m3)
	0–100 m	0.16	0.21	0.00	0.05	0.09	0.16	0.67	0.75	0.84
Annual average	100–200 m	0.12	0.15	0.00	0.01	0.05	0.20	0.28	0.37	0.88
	200–500 m	0.06	0.09	0.00	0.01	0.02	0.04	0.21	0.25	0.27
	>500m	0.04	0.08	0.00	0.01	0.01	0.04	0.20	0.27	0.51
	All	0.09	0.15	0.00	0.01	0.03	0.11	0.29	0.62	0.88
	0–100 m	0.16	0.34	0.00	0.02	0.06	0.15	0.65	1.13	6.79
Maximum 24-h average	100–200 m	0.12	0.25	0.00	0.01	0.03	0.13	0.48	0.84	5.93
	200–500 m	0.06	0.20	0.00	0.00	0.01	0.03	0.28	0.51	6.27
	>500m	0.04	0.13	0.00	0.00	0.01	0.02	0.19	0.42	2.88
	All	0.09	0.24	0.00	0.00	0.02	0.08	0.40	0.76	6.79
Relative error (%)
	0–100 m	10	13	0	3	5	10	35	53	54
	100–200 m	10	11	0	1	5	17	27	33	47
	200–500 m	6	9	0	2	2	4	21	25	28
Annual average	>500m	5	8	0	1	2	8	22	32	41
	All	8	10	0	1	3	9	28	40	54
	0–100 m	10	14	0	2	6	11	45	58	87
Maximum 24-h average	100–200 m	10	12	0	1	4	14	37	49	83
	200–500 m	6	11	0	1	2	4	36	45	73
	>500m	5	9	0	1	2	5	25	41	77
	All	8	12	0	1	3	9	33	49	87