Cohort progression — Športno društvo Riba
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 backstroke50 butterfly100 breaststroke200 freestyle100 backstroke100 medley200 breaststroke100 butterfly400 freestyle200 medley200 backstroke800 freestyle25 freestyle1500 freestyle25 breaststroke25 backstroke400 medley
Cohorts to compare: 2018 52017 182016 182015 192014 132013 182012 182011 192010 172009 122008 112007 92006 92004 42002 42000 81991 41988 31986 31977 31976 51975 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015