Cohort progression — Uks Fala Nieporęt
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 butterfly50 backstroke50 breaststroke100 breaststroke100 backstroke100 butterfly200 freestyle100 medley200 breaststroke200 medley200 backstroke400 freestyle200 butterfly25 freestyle
Cohorts to compare: 2015 42014 112013 152012 142011 112010 62009 142008 242007 132006 202005 192004 132003 62002 82001 82000 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013 born 2012