Cohort progression — Kłobucki Klub Pływacki Delfin
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 breaststroke50 butterfly100 freestyle100 medley100 breaststroke100 backstroke25 freestyle25 backstroke200 medley200 freestyle25 breaststroke100 butterfly
Cohorts to compare: 2019 32017 52016 52015 32014 92013 72012 82011 52010 102009 72008 82007 42006 92005 72004 62003 72002 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015