Cohort progression — Simklubben Elfsborg
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 backstroke100 freestyle50 breaststroke50 butterfly100 backstroke100 breaststroke200 freestyle200 medley100 butterfly200 backstroke200 breaststroke100 medley400 freestyle25 butterfly25 freestyle400 medley800 freestyle25 breaststroke25 backstroke
Cohorts to compare: 2016 102015 222014 222013 172012 232011 172010 152009 112008 72007 42006 52005 102004 72003 62002 32001 52000 41999 5
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