Table 7. Stepwise multiple regression analyses for tissue 

 Aroclor concentrations involving the variable "dredge volume." % 

 * the amount of variance in the Aroclor concentration explained 

 by the model. Variable code: W/D ■ wet/dry weight ratio, L = 

 shell length, T = water temperature, M * month, D = dredged 

 vol ume„ 



Aroclor 



Variable 



WLISc 



Station 

 % 



500MW 



% 



1242 



1 

 2 



D 



L 



73.6 

 88.5 



L 



74.8 



1254 



1 

 2 



W/D 



60.4 



W/D 

 T 



61.7 

 82.5 



1260 



1 

 2 



M 



38.7 



M 

 D 



53.9 

 67.3 



1254+1260 



1 

 2 

 3 



L 

 T 



M 



68.3 

 77.8 

 87.9 



I 



D 



49.0 

 70.3 



Total PCBs 



1 

 2 

 3 



L 



80.1 



L 

 T 

 D 



55.9 

 72.2 

 81.5 



Dredged vo 1 ume as a variable was not entered in the other two 



mussel populations maintained at Rlr and wLISrN. 



30 



