Cohort progression — Sweden
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 freestyle400 freestyle200 medley100 backstroke100 breaststroke100 butterfly50 backstroke200 backstroke200 breaststroke400 medley50 butterfly50 breaststroke200 butterfly1500 freestyle
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2008