Cohort progression — TOTIS VIRIBUS Świebodzin
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 backstroke100 freestyle50 butterfly50 breaststroke100 medley100 backstroke200 freestyle100 butterfly100 breaststroke200 medley
Cohorts to compare: 2015 62014 42013 122012 92011 72010 92009 172008 132007 162006 132005 182004 92003 62002 82001 41998 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2013 born 2012