Cohort progression — AZS AWFiS Gdańsk
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 breaststroke50 butterfly100 breaststroke50 backstroke100 backstroke100 butterfly200 freestyle200 breaststroke100 medley200 backstroke200 medley400 freestyle200 butterfly400 medley
Cohorts to compare: 2012 32009 42008 32006 32005 142004 42003 52001 71997 51996 31995 41993 71992 51990 31987 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009 born 2008