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Figure 8. Concentrations of sum PCB6 in B-cut and I-cut of muscle from Atlantic halibut sampled in different areas within Norwegian waters (see figure 1 for geographical location of the different areas). Median concentrations (columns) and 25 and 75 percentiles (vertical bars) are shown for each area. Mean values are indicated by triangles. The red line indicates the EU and Norwegian maximum level for sum PCB6 in fish muscle. Different letters above the columns (a and b for I-cut, a’ and b’ for B-cut) indicate significant differences between the areas (one-way ANOVA with log-transformed concentrations, followed by Tukey post-hoc test, p<0.02).
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