Table 3.

Accuracy, bias, and precision over the entire concentration range (occupational) for the CAMs compared to pDR-raw (uncorrected mass) for A) salt, B) welding fume, and C) ARD

Instrument	Data Pairs	Slope ± Std. Error	Intercept ± Std. Error (μg/m3)	r	% Bias
A) Salt
Foobot	8	0.46 ± 0.003	7.3 ± 2.7	0.991,2	−42
Speck	8	0.21 ± 0.009	6.1 ± 6.1	0.991,2	−64
AirBeam	8	0.07 ± 0.03	96 ± 28	0.66	−27
B) Welding fume
Foobot	7	0.50 ± 0.02	−5.4 ± 16	0.991,2	−48
Speck	7	0.10± 0.006	−0.3 ± 4.5	0.991,2	−76
AirBeam	7	0.08 ± 0.02	51 ± 18	0.84	−56
C) ARD
Foobot	7	0.96 ± 0.0091,2	8.2 ± 3.1	0.991,2	12
Speck	7	0.58 ± 0.10	76 ± 36	0.92	51
AirBeam	7	0.26 ± 0.03	15 ± 9.7	0.971,2	−42

¹meets EPA criterion

²meets NIOSH criterion