Cohort progression — Aquapark Wrocław
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 freestyle100 medley50 freestyle100 breaststroke50 breaststroke200 breaststroke200 freestyle50 butterfly100 backstroke50 backstroke200 backstroke200 medley
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 1987