Cohort progression — Simklubben Poseidon
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 butterfly200 freestyle50 backstroke100 backstroke100 breaststroke200 medley100 medley100 butterfly200 backstroke400 freestyle200 breaststroke25 butterfly200 butterfly400 medley800 freestyle25 breaststroke25 backstroke
Cohorts to compare: 2017 72016 302015 402014 402013 282012 252011 222010 212009 222008 152007 142006 152005 102004 112003 52002 92001 72000 111998 41977 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014