Cohort progression — MKS Piast Głogów
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 backstroke100 breaststroke50 butterfly100 backstroke100 medley200 freestyle200 medley100 butterfly200 breaststroke400 freestyle200 backstroke800 freestyle
Cohorts to compare: 2015 162014 242013 212012 242011 242010 232009 132008 232007 212006 252005 372004 252003 202002 202001 212000 251999 211998 24
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013 born 2012