HCB and PCB in Herring Gull eggs - Channel-Shelter I., Lake Huron, 1980-2000.
Model shows a significant rate of decline throughout the study with no change point.
Year
Text Box: log ug/g, wet weight
log ug/g, wet weight
HCB
Model shows no significant trend throughout the study.  There was a change point in 1995.
PCB 1:1