Table 2.

Measurement unit, measured values, sample sizes (N), means, their standard deviations (SD) for traits analysed and year classes during which a trait was recorded

Trait	Unit	Values	N	Mean	SD	Year classes
Survival
Survival1	Proportion	0 = died, 1 = survived	219 951	0.93	0.25	1996–1999, 2001–2002, 2004
Survival2	Proportion	0 = died/missing, 1 = survived	81 499	0.72	0.45	1995–2004
Survival2sea	Proportion	0 = died/missing, 1 = survived	40 406	0.71	0.45	1999–2004
Body weight
Weight1	g	Continuous	189 299	53.3	21.1	1995–2004
Weight2	g	Continuous	58 724	964	310	1995–2004
Weight3	g	Continuous	45 242	2374	685	1995–2004
Weight2sea	g	Continuous	41 678	1095	335	1996–2004
Health
Deformation2	Proportion	0 = normal, 1 = deformed*	58 781	0.05	0.22	1995–2004
Cataract2	Proportion	0 = healthy eyes, 1 = one eye opaque, 2 = both eyes opaque	20 111	0.31	0.63	2001–2004
Body composition
Flesh colour2sea	Score	Categorical (0 = white, …, 30 = dark red)†	5228	29.3	1.9	2001, 2003–2004
Entrail%2sea	Percentage	Continuous‡	39 041	11.6	2.0	1996–2001, 2003–2004
Maturity
Female maturity2	Proportion	0 = immature, 1 = mature	20 263	0.61	0.49	1997–2004
Male maturity2	Proportion	0 = immature, 1 = mature	21 992	0.25	0.44	1995–2004
Male maturity2sea	Proportion	0 = immature, 1 = mature	17 938	0.21	0.41	1996–2004

^*Externally visible deformities in head, neck, back or tail.

^†Colour of fillet at Róche Salmon colour fan scale (Skrede et al. 1990).

^‡100 × (Intact body weight − gutted body weight)/Intact body weight.