Cohort progression — Asociatia Sportiva "Constanta Sport Club"
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 butterfly200 medley200 freestyle50 backstroke100 freestyle50 breaststroke100 backstroke400 freestyle100 breaststroke100 butterfly800 freestyle200 backstroke200 breaststroke