Cohort progression — Redeco Wrocław
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 breaststroke100 freestyle100 breaststroke50 backstroke100 medley100 backstroke50 butterfly200 breaststroke200 medley200 backstroke200 freestyle100 butterfly400 freestyle800 freestyle400 medley200 butterfly
Cohorts to compare: 2008 62007 52006 32004 52003 32002 52001 72000 41999 51997 31985 51983 41981 31979 51977 31969 41960 51956 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2007 born 2004