Table 4.

Summary statistics of regression analysis between the collocated PM_2.5 measurements at the AMS 6 site for the non-forest-fire period of June 2011 to May 2013, with data from Environment Canada included for comparison.

Method comparison (Y/X)	Seasona	Slope (Y/X)	Intercept (μg m−3)	rb	Reference
FRM/SHARP	Cold (2013)	1.05	0.35	–	Environment Canada (http://www.ec.gc.ca/) (simple linear regression, SLR)
FRM/SHARP	Warm (2013)	0.99	0.22	–
FRM/TEOM40	Cold (2012)	1.3	0.94	–
FRM/TEOM40	Warm (2012)	0.94	1.72	–
FRM/TEOM40	Cold	0.88	2.20	0.71	This study (simple linear regression, SLR)
FRM/TEOM40	Warm	0.97	1.19	0.91
FRM/SHARP	Cold	1.02	–0.19	0.83
FRM/SHARP	Warm	1.10	–0.81	0.91
FRM/TEOM40	Cold	1.45	Intercept = 0	0.45
FRM/TEOM40	Warm	1.17		0.88
FRM/SHARP	Cold	0.99		0.83
FRM/SHARP	Warm	0.97		0.91
SHARP/TEOM40	Cold	1.28	1.27	0.73	This study (orthogonal regression, OR)
SHARP/TEOM40	Warm	1.21	0.64	0.67
SHARP/TEOM40	All	1.22	0.87	0.69
FRM/TEOM40	Cold	1.36	0.87	0.78
FRM/TEOM40	Warm	1.08	0.82	0.79
FRM/TEOM40	All	1.16	1.11	0.81
FRM/SHARP	Cold	1.27	–1.38	0.84
FRM/SHARP	Warm	1.23	–1.42	0.77
FRM/SHARP	All	1.25	–1.34	0.83

Notes. ^aCold and warm seasons are November to April and May to October, respectively.

^bParson correlation coefficient and Spearman rank order correlation coefficient were calculated for SLR and OR, respectively.