Cohort progression — MTP Kormoran Olsztyn
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 freestyle100 backstroke50 freestyle200 freestyle100 breaststroke400 freestyle200 medley100 butterfly50 backstroke50 butterfly50 breaststroke100 medley200 backstroke200 breaststroke800 freestyle200 butterfly1500 freestyle400 medley5000 freestyle50 unknown
Cohorts to compare: 2015 32014 142013 152012 152011 152010 152009 412008 362007 452006 592005 552004 502003 552002 632001 732000 541999 461998 501997 191996 111995 151994 71993 121992 81991 5
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013 born 2012