Cohort progression — KS AGH Kraków
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 freestyle50 butterfly100 butterfly50 backstroke100 backstroke100 freestyle200 freestyle200 backstroke200 medley400 freestyle100 breaststroke50 breaststroke200 butterfly200 breaststroke100 medley400 medley
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2007 born 2005 born 2004 born 2002