Cohort progression — Mariestads Simsällskap
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 breaststroke100 freestyle50 backstroke100 breaststroke50 butterfly100 backstroke25 backstroke25 freestyle25 breaststroke200 freestyle100 medley200 medley25 butterfly100 butterfly200 breaststroke1500 freestyle400 freestyle200 backstroke800 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015