Cohort progression — KS Swim2Win Krosno
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 freestyle50 breaststroke100 freestyle100 breaststroke50 backstroke50 butterfly100 backstroke200 freestyle100 medley200 breaststroke100 butterfly200 medley200 backstroke400 freestyle800 freestyle200 butterfly400 medley
Cohorts to compare: 2014 72013 52012 102011 82010 92009 92008 162007 142006 132005 72004 72003 92002 32001 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2012 born 2011