Cohort progression — UKS Posejdon Pułtusk
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 backstroke100 freestyle50 butterfly50 breaststroke100 backstroke100 breaststroke100 medley100 butterfly200 medley200 freestyle400 freestyle25 freestyle200 backstroke25 backstroke200 breaststroke200 butterfly800 freestyle
Cohorts to compare: 2017 42016 72015 62014 32013 92012 82011 32010 32009 102008 162007 212006 172005 142004 92003 92002 122001 122000 8
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2014