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Box plots of the body weight (g) and body length (mm) of fish assigned to Sélune, Aulne, Gave d'Oloron clusters and to a admixed category for two age at sea categories (SSW: single-sea-winter and MSW: multi-sea-winter) and for two periods: 1992–2000 and 2001–2009. Sample sizes are indicated for each box and different letters indicate significant pairwise differences. (Online version in colour.)
