Cohort progression — KS AZS AWF Biała Podlaska
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 backstroke100 backstroke100 medley50 breaststroke100 breaststroke100 butterfly200 freestyle200 medley200 breaststroke200 backstroke200 butterfly400 freestyle25 freestyle25 backstroke400 medley
Cohorts to compare: 2017 32015 72014 52013 32012 52011 82010 102009 42008 32007 52006 202005 222004 122003 52002 72001 112000 51999 51998 51997 41994 51992 31990 61989 31920 8
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013