Cohort progression — MKP Wodnik 29 Tychy
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 butterfly50 breaststroke100 breaststroke100 freestyle200 medley200 breaststroke100 medley200 freestyle100 butterfly50 backstroke100 backstroke400 freestyle400 medley200 butterfly200 backstroke800 freestyle50 unknown
Cohorts to compare: 2015 62014 72013 72012 52011 42010 52009 52008 32007 32006 62005 82002 92001 42000 81995 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013 born 2012