Cohort progression — SKP Delfin Kozienice
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 backstroke50 breaststroke100 freestyle100 breaststroke50 butterfly100 medley100 backstroke200 breaststroke100 butterfly25 freestyle200 freestyle25 backstroke400 freestyle200 medley200 backstroke25 breaststroke25 butterfly1500 freestyle200 butterfly
Cohorts to compare: 2018 32017 92016 132015 132014 182013 252012 222011 152010 182009 152008 102007 72006 62005 42004 72003 112002 102001 82000 71996 41995 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2018 born 2016 born 2015