Cohort progression — MKS Pałac Młodzieży Katowice
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 backstroke200 freestyle100 breaststroke100 butterfly200 medley400 freestyle200 backstroke200 breaststroke200 butterfly800 freestyle25 freestyle1500 freestyle400 medley25 butterfly
Cohorts to compare: 2015 62014 112013 152012 242011 152010 272009 162008 242007 442006 202005 202004 302003 152002 222001 152000 31999 41998 81997 211996 31995 61991 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