Cohort progression — Simklubben Sydsim
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 breaststroke50 backstroke100 breaststroke50 butterfly100 backstroke100 butterfly200 freestyle100 medley200 medley200 breaststroke400 freestyle200 butterfly200 backstroke25 butterfly25 freestyle800 freestyle1500 freestyle25 backstroke
Cohorts to compare: 2017 112016 162015 212014 242013 122012 182010 62009 82008 132007 32006 32005 42004 52002 32001 31996 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015 born 2014