Cohort progression — UKS SMS Galicja Kraków
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 butterfly100 medley50 freestyle100 freestyle50 backstroke50 breaststroke100 backstroke100 butterfly400 freestyle200 freestyle100 breaststroke200 medley200 backstroke200 breaststroke
50 m butterfly men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009