Cohort progression — UKS Omega Olkusz
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 freestyle50 butterfly100 freestyle50 breaststroke50 backstroke100 medley100 breaststroke200 medley100 backstroke100 butterfly200 freestyle200 breaststroke25 freestyle25 backstroke200 backstroke400 freestyle25 breaststroke200 butterfly400 medley25 butterfly
Cohorts to compare: 2018 82017 42016 42015 52014 132013 42012 162011 42010 172009 122008 152007 92006 232005 42004 92002 91999 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015