Cohort progression — Viborg Svømmeklub
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 butterfly50 freestyle100 breaststroke50 breaststroke200 freestyle200 medley100 medley100 backstroke100 butterfly50 backstroke200 breaststroke200 backstroke400 medley400 freestyle200 butterfly
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2013 born 2012 born 2011