Cohort progression — UKS Juvenia iSwim Białystok
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 freestyle100 breaststroke100 backstroke50 freestyle200 medley100 butterfly50 butterfly200 freestyle200 backstroke100 medley50 breaststroke50 backstroke400 freestyle200 breaststroke800 freestyle400 medley1500 freestyle
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013 born 2012