Cohort progression — UKS Ruch Grudziądz
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 backstroke100 backstroke50 breaststroke100 breaststroke50 butterfly200 backstroke200 freestyle200 medley100 medley400 freestyle200 breaststroke100 butterfly25 backstroke25 freestyle800 freestyle400 medley25 butterfly200 butterfly
Cohorts to compare: 2018 92017 52016 162015 32014 142013 142012 132011 192010 62009 62008 62007 92006 142005 72004 32003 112002 82001 82000 181999 151998 41994 31993 3
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015