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15,00 LL BFT no. = 1682 15,00 LL BFT no.= 1489

10,00FREQUENCY % 10,00
FREQUENCY %
5,00 5,00

0,00 0,00

WEIGHT CLASSES (kg) WEIGHT CLASSES (kg)

Figure 12. An example of bluefin tuna weight frequency data from longliners collected by scientific observers
in two harbours in the Central Mediterranean Sea in 2008 (left) and the data from the same two harbours as they
are reported by vessel having bluefin tuna quota in their landing declarations and in the official statistics for
ICCAT Task II (right).

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