Cohort progression — CSM Targoviste
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 butterfly200 medley200 freestyle100 breaststroke100 butterfly200 breaststroke100 backstroke400 freestyle200 backstroke100 medley50 breaststroke50 backstroke400 medley
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009 born 2008