Cohort progression — UKS V Łomianki
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 backstroke100 breaststroke100 butterfly200 freestyle100 medley200 medley200 breaststroke200 backstroke400 freestyle200 butterfly400 medley25 freestyle
Cohorts to compare: 2014 142013 142012 172011 152010 152009 152008 122007 82005 112004 102003 62002 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2013 born 2012 born 2011