Cohort progression — ULKS Victoria Kozy
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 freestyle100 medley50 backstroke100 breaststroke50 butterfly50 breaststroke100 backstroke200 medley100 butterfly200 freestyle200 backstroke200 breaststroke400 freestyle200 butterfly400 medley25 freestyle25 backstroke25 breaststroke800 freestyle
Cohorts to compare: 2008 52007 82006 102005 152004 212003 242002 332001 192000 121999 101998 61997 71996 31994 61993 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2008 born 2006 born 2005