Cohort progression — MKP Szuwarek Piła
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 backstroke50 freestyle100 breaststroke100 freestyle200 backstroke50 backstroke50 butterfly200 medley50 breaststroke100 medley200 breaststroke100 butterfly400 freestyle200 freestyle800 freestyle
100 m backstroke men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2006 born 2005