Cohort progression — Aarhus Swim - Skovbakken
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 breaststroke200 medley50 butterfly100 breaststroke200 freestyle50 backstroke100 backstroke100 medley100 butterfly200 breaststroke400 medley200 backstroke400 freestyle200 butterfly800 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2012