Cohort progression — AWFiS Gdańsk
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 butterfly50 freestyle100 freestyle50 breaststroke50 backstroke100 breaststroke100 backstroke100 butterfly200 freestyle50 unknown
50 m butterfly men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 1990