Cohort progression — UKS Żoliborz
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 breaststroke100 backstroke50 freestyle50 backstroke200 medley400 freestyle50 breaststroke200 freestyle200 backstroke200 breaststroke100 butterfly50 butterfly100 medley800 freestyle25 freestyle25 backstroke
Cohorts to compare: 2017 172016 322015 132014 432013 432012 512011 372010 442009 212008 202007 272006 222005 292004 352003 252002 232001 222000 81999 31998 211996 3
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014