Cohort progression — Clubul Sportiv Scolar Ploiesti
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 butterfly50 butterfly200 butterfly50 freestyle200 freestyle200 medley400 medley800 freestyle100 backstroke400 freestyle
Cohorts to compare: 2007 3