Cohort progression — UKS Na Fali Bytom
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 backstroke100 backstroke100 breaststroke100 medley50 breaststroke50 butterfly200 freestyle200 medley400 freestyle200 backstroke200 breaststroke100 butterfly25 freestyle25 backstroke800 freestyle400 medley50 unknown25 breaststroke
Cohorts to compare: 2016 42015 162014 192013 182012 332011 282010 192009 182008 122007 262006 162005 172004 92003 11
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014 born 2013