Cohort progression — UKS Olimpijczyk 23 Lublin
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 butterfly50 backstroke100 backstroke100 butterfly50 breaststroke100 breaststroke200 medley200 freestyle400 freestyle200 backstroke100 medley25 backstroke400 medley200 breaststroke25 freestyle200 butterfly800 freestyle25 breaststroke
Cohorts to compare: 2013 52012 52011 82010 252009 252008 392007 282006 262005 272004 252003 182002 51996 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2010