Spatial Variability and Application of Ratios between BTEX in Two Canadian Cities

Table 4

B : T : E : X ratios in Windsor, Sarnia, and the previous literature.

	Site	B : T : E : X
Windsor	𝑁=42	1.80 : 6.47 : 1 : 3.77
Sarnia	𝑁=37	2.05 : 5.58 : 1 : 3.68
	Site 1 (urban)	2.01 : 4.94 : 1 : 4.95
Greater Cairo [3]	Site 2 (urban)	2.03 : 4.91 : 1 : 4.87
	Site 3 (rural)	2.31 : 2.98 : 1 : 2.59
China [26]	City of Guangzhou	2.9 : 4.3 : 1 : 4.6
Taiwan-vehicle exhaust [15]	Tunnel	3 : 4 : 1 : 4