Cohort progression — Płetwal Mława
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 backstroke100 backstroke50 breaststroke100 breaststroke50 butterfly100 medley200 backstroke100 butterfly200 freestyle200 breaststroke200 medley
Cohorts to compare: 2008 42007 32006 142005 82004 82003 42002 82001 142000 131999 171998 91997 41996 41995 41994 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2006 born 2005