Cohort progression — Helsingin Uimarit
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 backstroke50 breaststroke100 breaststroke100 backstroke200 medley100 butterfly100 medley200 freestyle400 freestyle200 breaststroke25 freestyle200 backstroke25 backstroke800 freestyle200 butterfly400 medley25 butterfly
Cohorts to compare: 2017 122016 192015 222014 182013 242012 162011 262010 242009 272008 92007 72006 42005 82004 31982 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014