Cohort progression — Swim Power Simidrottsförening
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 freestyle50 backstroke50 breaststroke50 butterfly100 freestyle25 freestyle25 backstroke25 breaststroke100 backstroke100 medley100 breaststroke25 butterfly200 freestyle200 backstroke400 freestyle100 butterfly200 medley200 breaststroke200 butterfly800 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015