The predicted proportion of mature female and male anadromous whitefish (Coregonus lavaretus) in relation to the catch year (1998–2014) among four- (age 4) and five-year-old (age 5) mature and immature fish caught in June–December in the southern (S) and northern (N) Gulf of Bothnia (models, Tab. A.2). Sample sizes for mature and immature fish 3479 and 1668 at age 4 and 3260 and 644 at age 5, respectively.