Cohort progression — KS Fala Niepołomice
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 breaststroke100 backstroke200 freestyle100 breaststroke100 medley100 butterfly400 freestyle200 backstroke25 freestyle200 medley25 backstroke200 breaststroke25 breaststroke200 butterfly800 freestyle400 medley
Cohorts to compare: 2016 52015 82014 72013 62012 62011 92010 92009 152008 122007 92006 122005 172004 112003 92002 112001 112000 131999 141998 71997 51995 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014