Table 4.

Median, Interquartile range of detected PCBs congeners and Percentage of Positive samples.

PCB No 52	% of Positive samples	PCB No 101	% of Positive samples	PCB No. 153	% of Positive samples	PCB No 209	% of Positive samples
First Quartile	70	First Quartile	80	First Quartile	70	First Quartile	50
0.49		0.415		2.13		2.945
Second Quartile		Second Quartile		Second Quartile		Second Quartile
0.59		0.485		2.87		3.45
Third Quartile		Third Quartile		Third Quartile		Third Quartile
0.76		0.615		3.25		3.71
Interquartile Range		Interquartile Range		Interquartile Range		Interquartile Range
0.27		0.2		1.12		0.765
Median = Q2		Median = Q2		Median = Q2		Median = Q2
0.59		0.485		2.87		3.45
Minimum		Minimum		Minimum		Minimum
0.46		0.39		1.78		2.68
Maximum		Maximum		Maximum		Maximum
0.97		0.77		3.68		3.76
Range		Range		Range		Range
0.51		0.38		1.9		1.08