Table 3.

The results of statistical analysis using the Wilcoxon matched pair test

Compared congeners	Reservoir type
	“I” M vs. D	“U” M vs. D	“A” M vs. D
PCDDs	P = 0.03	P = 0.50	P = 0.75
PCDFs	P = 0.05	P = 0.92	P = 0.08
PCDDs/PCDFs	P = 0.004	P = 0.57	P = 0.03
TEQ	P = 0.68	P = 0.15	P = 0.04