Cohort progression — Västerås 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: 50 freestyle100 freestyle50 backstroke100 backstroke50 breaststroke100 breaststroke50 butterfly200 freestyle200 medley100 medley100 butterfly25 breaststroke200 backstroke25 freestyle400 freestyle25 backstroke25 butterfly200 breaststroke800 freestyle200 butterfly
Cohorts to compare: 2019 72018 202017 422016 412015 452014 582013 422012 342011 212010 222009 142008 72007 62006 52004 32003 32002 72001 61991 31984 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016