Cohort progression — Uks Cityzen
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 backstroke50 breaststroke50 butterfly100 breaststroke100 backstroke400 freestyle200 medley200 freestyle100 medley100 butterfly200 backstroke200 breaststroke25 freestyle25 backstroke200 butterfly800 freestyle400 medley1500 freestyle
Cohorts to compare: 2018 32017 122016 122015 202014 132013 62012 182011 102010 172009 172008 172007 222006 72005 32004 32001 72000 101999 61954 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015