Cohort progression — KS Extreme Team Oborniki
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 freestyle200 freestyle50 breaststroke400 freestyle50 butterfly50 backstroke100 medley100 butterfly800 freestyle1500 freestyle
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2002