Cohort progression — Lørenskog/Rælingen
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 backstroke50 freestyle50 breaststroke200 breaststroke100 freestyle100 backstroke100 breaststroke200 backstroke200 freestyle50 butterfly200 medley400 freestyle100 butterfly