Cohort progression — Sigma Swim Allerød
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 freestyle100 freestyle50 butterfly100 backstroke50 breaststroke200 freestyle100 breaststroke200 medley50 backstroke100 medley100 butterfly200 backstroke200 breaststroke400 freestyle400 medley200 butterfly800 freestyle25 freestyle25 backstroke1500 freestyle
Cohorts to compare: 2018 32017 142016 152015 82014 122013 92012 52011 72010 132009 52008 92007 72006 51999 41980 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015