Cohort progression — Clubul Sportiv Olimpia Bucuresti
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 butterfly50 backstroke100 freestyle100 backstroke100 butterfly50 breaststroke200 freestyle200 backstroke100 breaststroke200 butterfly100 medley200 medley200 breaststroke
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2008 born 2007 born 2006