Cohort progression — Cl. Sp. Municipal 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 freestyle800 freestyle1500 freestyle200 freestyle200 medley400 medley100 butterfly200 breaststroke200 butterfly100 freestyle100 breaststroke50 butterfly50 freestyle50 backstroke
400 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009