Cohort progression — UKS Vigor Łętownia
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 breaststroke50 butterfly50 freestyle100 medley25 freestyle100 breaststroke50 backstroke25 butterfly25 backstroke100 freestyle200 medley25 breaststroke100 backstroke200 breaststroke100 butterfly200 freestyle400 freestyle
50 m breaststroke men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2013 born 2012 born 2011