Cohort progression — St. Siemacha Kraków
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 backstroke50 butterfly100 freestyle50 breaststroke25 freestyle100 medley25 backstroke200 medley25 butterfly200 freestyle100 breaststroke100 backstroke25 breaststroke400 freestyle100 butterfly400 medley200 breaststroke200 backstroke800 freestyle
Cohorts to compare: 2017 62016 112015 132014 142013 52012 142011 232010 102009 72008 72007 32006 32005 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2015 born 2014