Cohort progression — Stockholmspolisens IF Simförening
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 butterfly50 backstroke50 breaststroke100 medley100 breaststroke100 backstroke200 freestyle100 butterfly200 medley400 freestyle200 breaststroke200 backstroke800 freestyle200 butterfly25 butterfly1500 freestyle400 medley25 freestyle
Cohorts to compare: 2016 72015 222014 132013 162012 272011 262010 242009 222008 152007 92006 182004 92003 72002 32001 41999 41998 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013