Cohort progression — UKS ÓSEMKA Oświęcim
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 butterfly100 freestyle100 breaststroke100 medley200 medley50 breaststroke100 backstroke50 backstroke400 freestyle200 freestyle100 butterfly200 breaststroke200 backstroke25 freestyle25 backstroke800 freestyle25 butterfly25 breaststroke400 medley
Cohorts to compare: 2017 182016 222015 232014 182013 212012 212011 272010 262009 202008 342007 222006 262005 342004 492003 432002 402001 352000 401999 231998 221997 24
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014