Cohort progression — Svimjifelagið Flot
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 backstroke25 freestyle100 freestyle25 backstroke50 breaststroke100 backstroke100 medley100 breaststroke25 breaststroke200 freestyle16 freestyle33 freestyle33 breaststroke16 backstroke200 breaststroke33 backstroke50 butterfly
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015