Cohort progression — Vaasan Uimaseura-Vasa Simsälls
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 freestyle50 freestyle50 breaststroke50 butterfly50 backstroke100 breaststroke100 backstroke200 freestyle200 medley400 freestyle100 butterfly100 medley200 breaststroke200 butterfly400 medley200 backstroke800 freestyle25 backstroke1500 freestyle25 freestyle
Cohorts to compare: 2017 42016 112015 222014 262013 262012 272011 242010 312009 212008 152007 172006 72005 52004 72003 62001 32000 41997 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014