Cohort progression — Neptun Monki
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 freestyle50 freestyle100 backstroke50 butterfly50 backstroke100 butterfly50 breaststroke100 breaststroke
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2007 born 2005 born 2004