Cohort progression — UKS Olimpijczyk 23
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 breaststroke50 butterfly100 backstroke100 breaststroke200 freestyle100 medley200 medley400 freestyle100 butterfly200 backstroke200 breaststroke800 freestyle25 butterfly400 medley25 unknown25 breaststroke25 freestyle
Cohorts to compare: 2016 72015 132014 82013 252012 232011 152010 292009 182008 172007 82006 82005 62004 92003 152002 4
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