Cohort progression — UKS Siódemka Sopot
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 backstroke50 breaststroke100 backstroke50 butterfly100 breaststroke100 medley100 butterfly400 freestyle200 medley200 freestyle200 backstroke200 breaststroke200 butterfly800 freestyle25 freestyle25 backstroke400 medley1500 freestyle
Cohorts to compare: 2018 92017 92016 212015 152014 252013 202012 162011 222010 352009 292008 332007 442006 212005 202004 302003 242002 252001 262000 91999 301997 81996 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015