Cohort progression — KS PUSZCZA Hajnówka
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 breaststroke100 breaststroke100 backstroke50 butterfly100 medley100 butterfly200 medley200 freestyle200 breaststroke400 freestyle200 backstroke
Cohorts to compare: 2014 72013 102012 72011 92010 102009 112008 72007 112006 112005 52004 162003 72001 42000 7
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2013 born 2011