Cohort progression — K.S. Warta Poznań
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 freestyle200 freestyle100 freestyle50 butterfly100 backstroke100 breaststroke100 butterfly200 medley400 freestyle50 backstroke50 breaststroke100 medley200 backstroke200 breaststroke200 butterfly800 freestyle400 medley1500 freestyle150 freestyle
Cohorts to compare: 2010 232009 202008 292007 232006 212005 202004 182003 222002 162001 272000 171999 81997 201996 161995 191994 101993 31992 101990 41980 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2007