Cohort progression — KS Posnania Poznań
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 butterfly100 breaststroke100 backstroke200 medley50 breaststroke400 freestyle100 butterfly200 freestyle50 backstroke200 breaststroke200 backstroke100 medley200 butterfly800 freestyle400 medley1500 freestyle25 unknown
Cohorts to compare: 2014 172013 222012 232011 282010 292009 212008 292007 212006 232005 292004 222003 162002 202001 182000 241999 131998 161997 61996 51995 51994 31993 9
100 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2013 born 2012 born 2011