Cohort progression — UKS Nika Sport Team 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 freestyle50 butterfly100 freestyle50 breaststroke50 backstroke100 medley100 backstroke100 breaststroke200 freestyle25 backstroke100 butterfly25 freestyle200 medley25 breaststroke400 freestyle200 breaststroke200 backstroke200 butterfly25 butterfly400 medley
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013