Table 3.

Table of means and 95% confidence intervals for goodness tests across a month-long span. The shorter period results in higher precision and accuracy. For correlation, a higher mean score is better. For FE and RSE, a lower mean is better. Low 95% confidence intervals (2SD) are better all round.

Gas	Metric	Side	Untested		PCC > 0.6		PCC > 0.7		PCC > 0.8		RSE < 20		FE < 1.0
			Mean	2SD	Mean	2SD	Mean	2SD	Mean	2SD	Mean	2SD	Mean	2SD
NO2	RSE	a	37.5	22.6	24.4	9.69	20.5	6.37	20.0	5.43	28.9	12.1	28.5	10.1
		b	32.6	14.0	19.9	5.09	19.3	7.37	20.3	4.31	23.4	8.70	22.7	7.77
	FE	a	1.39	1.34	0.80	1.35	0.49	0.36	0.50	0.38	1.16	1.03	0.99	0.82
		b	1.06	0.88	0.66	1.01	0.41	0.21	0.46	0.28	0.62	0.44	0.59	0.39
	PCC	a	0.57	0.13	0.85	0.14	0.89	0.04	0.89	0.02	0.64	0.28	0.64	0.30
		b	0.59	0.14	0.82	0.27	0.86	0.31	0.89	0.04	0.69	0.29	0.67	0.37
	Used	a	100%		58%		50%		50%		75%		83%
		b	100%		77%		58%		45%		87%		85%
O3	RSE	a	30.5	12.8	28.9	16.6	27.0	10.9	27.9	17.0	23.9	7.64	33.3	22.1
		b	28.4	8.21	29.8	17.3	27.7	18.8	25.4	13.0	25.4	9.53	26.8	12.0
	FE	a	1.41	1.26	0.81	1.11	0.83	0.91	1.28	1.83	0.76	0.83	0.80	0.85
		b	1.04	0.77	1.21	2.15	1.46	3.13	0.81	1.07	0.53	0.33	0.53	0.32
	PCC	a	0.77	0.07	0.83	0.12	0.82	0.12	0.82	0.14	0.84	0.10	0.80	0.12
		b	0.78	0.06	0.81	0.15	0.82	0.20	0.84	0.10	0.83	0.08	0.84	0.06
	Used	a	100%		90%		88%		83%		73%		50%
		b	100%		91%		77%		75%		93%		80%