Cohort progression — S 77 Stenungsund
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 backstroke100 freestyle50 breaststroke100 backstroke100 breaststroke50 butterfly200 freestyle200 medley100 butterfly200 backstroke100 medley25 freestyle25 backstroke25 breaststroke400 freestyle200 breaststroke400 medley200 butterfly25 butterfly
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014