Cohort progression — Viborg Svømme Klub
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 medley50 freestyle50 butterfly100 breaststroke200 freestyle50 backstroke50 breaststroke100 backstroke200 medley200 breaststroke100 butterfly200 backstroke400 freestyle400 medley200 butterfly
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2011 born 2010