Cohort progression — NABAIJI TEAM DECATHLON
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 butterfly50 breaststroke100 medley200 freestyle50 backstroke100 breaststroke200 medley
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 1996 born 1994 born 1991