Cohort progression — UKS Wodnik Katowice
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 backstroke50 breaststroke100 freestyle100 medley50 butterfly25 freestyle100 breaststroke25 backstroke100 backstroke25 breaststroke25 butterfly200 medley200 freestyle
Cohorts to compare: 2018 182017 252016 412015 482014 332013 132012 132011 112010 92009 82008 41981 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2018 born 2017 born 2016 born 2015