Cohort progression — Saltsjöbadens Idrottsförening
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 freestyle50 freestyle50 breaststroke100 breaststroke100 backstroke50 backstroke200 freestyle100 butterfly100 medley200 medley50 butterfly400 freestyle200 backstroke200 breaststroke800 freestyle400 medley200 butterfly1500 freestyle
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2013 born 2012