Cohort progression — Førde IL Symjing
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 freestyle50 butterfly50 breaststroke200 freestyle100 breaststroke100 backstroke200 medley200 breaststroke400 freestyle50 backstroke100 butterfly200 backstroke200 butterfly400 medley100 medley
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009