Cohort progression — KS Swim Art 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: 50 freestyle50 butterfly100 freestyle50 backstroke50 breaststroke200 freestyle100 breaststroke100 butterfly100 backstroke100 medley200 butterfly400 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2004