Cohort progression — MKS CKS-SMS Szczecin
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 butterfly200 freestyle100 backstroke100 breaststroke50 backstroke200 medley50 breaststroke100 medley400 freestyle100 butterfly200 backstroke200 breaststroke800 freestyle200 butterfly1500 freestyle
Cohorts to compare: 2016 362015 182014 242013 222012 192011 232010 472009 152008 152007 62005 52004 52003 9
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2013