Cohort progression — TS Pływak Bochnia
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 medley100 freestyle50 backstroke100 breaststroke50 breaststroke100 backstroke200 medley200 breaststroke100 butterfly200 freestyle400 freestyle25 backstroke200 backstroke25 freestyle25 breaststroke25 butterfly400 medley
Cohorts to compare: 2017 42016 132015 142014 62012 42010 32008 32007 42006 32005 52004 42003 62002 42001 52000 141997 7
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015