Cohort progression — St. Solne Miasto Wieliczka
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 breaststroke100 freestyle25 backstroke100 backstroke100 medley50 butterfly25 freestyle200 freestyle100 breaststroke200 medley400 freestyle200 backstroke25 breaststroke100 butterfly25 butterfly200 breaststroke400 medley800 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015