Cohort progression — Iceland
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 freestyle200 freestyle50 freestyle100 backstroke100 breaststroke400 freestyle200 medley50 backstroke50 breaststroke100 butterfly50 butterfly400 medley200 backstroke200 breaststroke200 butterfly800 freestyle
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2008