Cohort progression — Njurunda Simsällskap
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 breaststroke50 backstroke50 butterfly100 breaststroke200 freestyle100 backstroke100 butterfly200 medley100 medley200 breaststroke200 backstroke400 freestyle25 freestyle25 backstroke200 butterfly25 breaststroke400 medley800 freestyle
Cohorts to compare: 2018 92017 132016 242015 132014 92013 62012 162011 62010 52009 72008 82007 42006 52005 32004 62002 4
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015