Cohort progression — WOPR Rawa Maz
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 manikin carry50 manikin tow with fins50 manikin carry with fins50 super lifesaver50 freestyle
50 m manikin carry men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2012 born 2010