Cohort progression — Vikingeklubben Isbjørnen
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 25 freestyle50 breaststroke50 freestyle25 breaststroke100 breaststroke25 butterfly100 freestyle
Cohorts to compare: 1963 3
25 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 1963