Cohort progression — Stavanger SK
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 freestyle100 freestyle200 freestyle50 butterfly50 breaststroke100 backstroke400 freestyle200 medley100 breaststroke50 backstroke200 backstroke100 butterfly200 breaststroke200 butterfly400 medley800 freestyle1500 freestyle