Cohort progression — UKS 3-Wodnik Wolsztyn
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 freestyle100 breaststroke50 backstroke50 breaststroke50 butterfly100 backstroke100 medley200 medley400 freestyle200 breaststroke100 butterfly200 freestyle200 backstroke25 backstroke25 freestyle800 freestyle
Cohorts to compare: 2017 42016 122015 112014 102013 152012 102011 132010 152009 92008 112007 132006 122005 92004 82003 62002 52001 192000 6
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014