Table 5.

Correlations between the concentrations in Hartford and the ones in all other sites for PM_2.5 mass, source contributions, and selected PM_2.5 chemical components

Average	PM2.5	Regional Sulfur	Motor Vehicle	Road Dust	Oil Combustion	Sea Salt
Bridgeport	0.89	0.77	0.68	0.68	0.76	0.57
Danbury	0.91	0.84	0.72	0.76	0.59	0.55
New Haven	0.82	0.82	0.64	0.41	0.22	0.46
Springfield	0.85	0.81	0.69	0.62	0.76	0.37

Average	EC	Zn	Pb	Cu	Br	Si	Fe	Al	Ca
Bridgeport	0.69	0.74	0.36	0.62	0.52	0.79	0.68	0.61	0.66
Danbury	0.87	0.81	0.40	0.56	0.52	0.85	0.80	0.66	0.73
New Haven	0.65	0.70	0.28	0.46	0.46	0.55	0.47	0.41	0.46
Springfield	0.76	0.81	0.38	0.44	0.42	0.74	0.68	0.58	0.64
	Ba	Ti	S	K	V	Ni	Na	Cl	Mn
Bridgeport	0.59	0.63	0.87	0.80	0.78	0.63	0.73	0.59	0.31
Danbury	0.57	0.55	0.93	0.85	0.69	0.49	0.73	0.57	0.39
New Haven	-	0.33	0.88	0.73	0.28	0.27	0.68	0.47	-
Springfield	0.44	0.53	0.87	0.82	0.80	0.49	0.51	0.39	0.20

Note: The correlation coefficients with a symbol (-) were not significant (p > 0.05).