Cohort progression — SMS Oświęcim
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 butterfly200 freestyle200 medley400 freestyle100 butterfly100 freestyle50 freestyle200 butterfly200 breaststroke50 breaststroke100 breaststroke400 medley50 backstroke100 backstroke200 backstroke800 freestyle1500 freestyle100 medley
Cohorts to compare: 2010 52009 122008 162007 182006 192005 162004 342003 282002 272001 182000 271999 461998 371997 351996 381995 301994 171993 111992 71991 5
50 m butterfly men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009 born 2008 born 2007