Cohort progression — Reykjavík
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 freestyle200 freestyle100 backstroke100 breaststroke50 butterfly50 backstroke200 medley50 breaststroke100 butterfly400 freestyle200 breaststroke200 backstroke100 medley200 butterfly400 medley800 freestyle
Cohorts to compare: 2016 32015 52014 122013 182012 132011 152010 202009 122008 82007 42006 52005 31996 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013