. Author manuscript; available in PMC: 2016 Jan 31.

Published in final edited form as: Int J Environ Health Res. 2015 Mar 16;26(1):58–74. doi: 10.1080/09603123.2015.1020414

Table 2. Comparison between HPAC models with RAWS and Portable Station Data.

	January 7			January 8			January 9			January 11			January 12

	R²	Mean Bias	RMSE	R²	Mean Bias	RMSE	R²	Mean Bias	RMSE	R²	Mean Bias	RMSE	R²	Mean Bias	RMSE
Surface Dosage:
60 min	0.990	1.995	1.412	0.987	2.021	1.422	0.960	8.088	2.844	0.995	0.473	0.688	0.966	4.990	2.234

Concentration:
5 min	0.997	.000	.000	0.971	.000	.001	0.936	.000	.001	0.991	.000	.001	0.979	.000	.001
15 min	0.974	.000	.001	0.965	.000	.001	0.924	.000	.002	0.987	.000	.000	0.891	.000	.002
30 min	0.975	.000	.001	0.973	.000	.000	0.893	.000	.001	0.991	.000	.000	0.957	.000	.001
45 min	0.946	.000	.001	0.888	.000	.000	0.624	.000	.001	0.983	.000	.000	0.879	.000	.000
60 min	−0.136	.000	7.71 × 10⁻⁷	0.677	.000	.000	0.440	.000	.000	0.977	.000	.000	0.284	.000	.000

Note: Statistical analyses shown above include correlation (R²), mean bias and root mean square deviation (RMSE).