Cohort progression — UKS 5 plus 1 Opole
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 freestyle50 backstroke100 backstroke100 breaststroke50 butterfly200 medley200 freestyle50 breaststroke100 medley400 freestyle100 butterfly200 breaststroke200 backstroke800 freestyle200 butterfly1500 freestyle
Cohorts to compare: 2009 52008 112007 112006 222005 172004 282003 332002 222001 312000 131999 71998 7
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2008 born 2006