Cohort progression — Oulun Lohet
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 freestyle50 freestyle50 breaststroke100 breaststroke100 backstroke50 backstroke50 butterfly200 medley200 freestyle100 butterfly400 freestyle100 medley200 backstroke200 breaststroke800 freestyle400 medley200 butterfly25 freestyle25 backstroke1500 freestyle
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013