Cohort progression — Simklubben Hajen
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 breaststroke50 backstroke100 freestyle50 butterfly100 breaststroke100 backstroke200 freestyle200 medley100 medley200 breaststroke100 butterfly400 freestyle25 butterfly200 backstroke800 freestyle200 butterfly400 medley1500 freestyle25 freestyle
Cohorts to compare: 2016 42015 132014 162013 242012 152011 192010 112009 102008 82007 52006 42004 32003 41971 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013