Table 7.

Evaluation of mass concentrations estimated with the Sharp sensors with reference to those measured with the SMPS and APS.

Aerosol	Data Pairs	Slope ± Std. Error	Intercept ± Std. Error (μg/m3)	r	R2	% Bias
A. Sharp DN
0.9% Salt Aerosol	21	1.2 ± 0.02	−34 ± 14	0.991	0.99	−3.71,2
5% Salt Aerosol	21	0.9 ± 0.0061,2	−5.0 ± 5.01	0.991	0.99	5.21,2
Arizona Road Dust	18	1.3 ± 0.04	−55 ± 30	0.991	0.98	−5.81,2
Diesel Fume	21	1.1 ± 0.051,2	3.3 ± 651	0.991	0.99	−9.81,2
Welding Fume	18	1.0 ± 0.021,2	−57 ± 31	0.991	0.99	−1.31,2
B. Sharp GP
0.9% Salt Aerosol	21	1.2 ± 0.02	−33 ± 14	0.991	0.99	−3.81,2
5% Salt Aerosol	21	0.9 ± 0.0061,2	−0.6 ± 5.01	0.991	0.99	4.61,2
Arizona Road Dust	18	1.3 ± 0.03	−56 ± 26	0.991	0.98	−6.31,2
Diesel Fume	21	1.1 ± 0.0251,2	8.2 ± 66	0.971	0.95	−9.31,2
Welding Fume	18	1.0 ± 0.011,2	−55 ± 25	0.991	0.99	−2.41,2

¹meets EPA criterion

²meets NOISH criterion