Cohort progression — KP Strzałka Puławy
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 freestyle200 medley50 freestyle50 butterfly100 breaststroke50 breaststroke400 freestyle100 butterfly50 backstroke200 freestyle100 backstroke100 medley200 breaststroke200 backstroke200 butterfly
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2013