Cohort progression — Klub Uczelniany AZS Uniwersytetu Warszawskiego
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 freestyle50 butterfly100 breaststroke50 breaststroke200 freestyle50 backstroke100 backstroke100 butterfly
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2012