Cohort progression — UKS Szesnastka
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 breaststroke50 backstroke50 butterfly100 freestyle100 breaststroke100 medley100 backstroke100 butterfly200 backstroke200 freestyle200 breaststroke200 medley400 freestyle25 backstroke25 freestyle
Cohorts to compare: 2016 232015 172014 252013 222012 162011 172010 142009 162008 212007 302006 282005 282004 202003 92001 7
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014 born 2013