Cohort progression — MKP Zabrze
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 backstroke50 breaststroke100 freestyle100 breaststroke100 medley50 butterfly100 backstroke200 freestyle200 breaststroke200 medley100 butterfly25 backstroke400 freestyle200 backstroke25 freestyle200 butterfly
Cohorts to compare: 2016 262015 272014 322013 282012 252011 252010 172009 142008 142007 212004 42003 72002 62001 6
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013