Cohort progression — Sjöbo 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: 100 freestyle50 freestyle50 butterfly50 breaststroke50 backstroke100 breaststroke100 backstroke100 butterfly100 medley200 freestyle200 medley400 freestyle200 breaststroke200 butterfly200 backstroke400 medley25 butterfly800 freestyle1500 freestyle25 breaststroke
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2014 born 2013