Cohort progression — Hørsholm Svømmeforening
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 freestyle100 freestyle50 butterfly50 breaststroke100 breaststroke200 freestyle50 backstroke100 medley100 backstroke100 butterfly200 medley200 breaststroke200 backstroke400 freestyle200 butterfly25 breaststroke
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2012