Cohort progression — Svømmeklubben Triton Ballerup
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 freestyle50 freestyle50 butterfly100 backstroke50 breaststroke50 backstroke200 freestyle100 butterfly100 breaststroke100 medley200 medley200 butterfly200 backstroke200 breaststroke400 freestyle400 medley50 unknown25 breaststroke800 freestyle
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014 born 2013