Cohort progression — UKS H2O Warszawa
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 freestyle50 freestyle50 backstroke100 backstroke50 breaststroke100 breaststroke50 butterfly100 medley200 freestyle100 butterfly200 medley400 freestyle200 backstroke25 freestyle25 backstroke200 breaststroke25 breaststroke400 medley
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014