Cohort progression — UKS 48 Warszawa Śródmieście
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 backstroke100 backstroke50 butterfly200 freestyle50 breaststroke100 breaststroke200 medley100 butterfly400 freestyle200 backstroke100 medley200 breaststroke400 medley200 butterfly800 freestyle1500 freestyle
Cohorts to compare: 2017 142016 202015 192014 32013 42012 112011 82010 72009 62008 52007 82006 62005 52003 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014