Cohort progression — Simmis Wanda ry
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 butterfly50 backstroke100 breaststroke100 backstroke50 breaststroke200 medley100 butterfly200 freestyle400 freestyle200 backstroke100 medley200 breaststroke800 freestyle200 butterfly400 medley25 freestyle25 backstroke25 breaststroke
Cohorts to compare: 2018 52017 92016 252015 182014 212013 182012 232011 162010 232009 212008 222007 82006 62005 72004 41998 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2018 born 2016 born 2015