Cohort progression — Ármann
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 50 freestyle100 freestyle100 backstroke200 freestyle50 backstroke100 breaststroke100 medley50 butterfly50 breaststroke100 butterfly200 medley200 breaststroke400 freestyle25 backstroke200 backstroke25 breaststroke25 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015