Cohort progression — Klub Pływacki H2O Jastrzębie-Zdrój
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 breaststroke50 freestyle50 backstroke100 breaststroke100 freestyle100 medley50 butterfly100 backstroke25 freestyle25 backstroke200 breaststroke25 breaststroke200 freestyle200 medley100 butterfly200 backstroke400 freestyle800 freestyle25 butterfly
Cohorts to compare: 2015 32014 52013 72012 82011 102010 102009 122008 72007 182006 172005 112004 82003 82002 32001 82000 7
50 m breaststroke men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2013