Cohort progression — Delfinens simsällskap Örebro
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 breaststroke25 freestyle25 breaststroke100 freestyle50 backstroke25 backstroke25 butterfly100 breaststroke50 butterfly100 medley100 backstroke200 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2018 born 2016 born 2014