Cohort progression — Clubul Sportiv Petrolul Ploiesti
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 400 freestyle100 freestyle200 freestyle200 medley50 freestyle50 butterfly100 backstroke50 backstroke100 butterfly200 backstroke800 freestyle1500 freestyle200 butterfly50 breaststroke100 medley400 medley100 breaststroke
400 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2008 born 2007