Cohort progression — Lidingö Simklubb
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 backstroke50 breaststroke100 freestyle50 butterfly100 breaststroke100 backstroke100 medley200 freestyle200 medley100 butterfly400 freestyle200 backstroke25 butterfly800 freestyle200 breaststroke1500 freestyle400 medley200 butterfly
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014 born 2013