Cohort progression — MKS Juvenia Białystok
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 freestyle50 freestyle100 backstroke50 butterfly50 backstroke100 breaststroke50 breaststroke100 medley100 butterfly200 freestyle200 medley400 freestyle200 backstroke200 breaststroke800 freestyle200 butterfly400 medley1500 freestyle25 freestyle
Cohorts to compare: 2013 42010 102009 162008 362007 192006 312005 252004 322003 242002 282001 282000 301999 271998 221997 171996 81995 101994 31993 7
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2010 born 2008