Cohort progression — UKP Kmita Zabierzów
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 backstroke50 butterfly50 breaststroke200 freestyle25 freestyle400 freestyle100 medley25 backstroke100 breaststroke100 backstroke100 butterfly200 medley200 backstroke200 breaststroke25 butterfly25 breaststroke200 butterfly800 freestyle
Cohorts to compare: 2018 172017 132016 92015 192014 332013 302012 112011 202010 52009 152008 142007 192006 212005 172004 132003 192002 162001 112000 121999 91998 111995 31994 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015