All points lay on one smooth curve, extreme points on which are
Aroclor 1242 and Aroclor 1260. The points corresponding to our samples and herring, caught in Gulf of
Finland are almost identical; point of herring caught in Gulf of Bothnia is located
more nearer to Aroclor 1254 (main Russian PCB mixture Sovol alike to it).
Thus it is possible to count, that profile of PCBs contained in fishes are
practically identical and close to Àroclor 1254.