Cohort progression — Muks Huragan Koło
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 butterfly50 backstroke100 backstroke100 breaststroke200 medley50 breaststroke100 medley25 backstroke25 freestyle400 freestyle100 butterfly200 backstroke200 freestyle25 breaststroke200 breaststroke800 freestyle25 butterfly200 butterfly
Cohorts to compare: 2019 102018 72017 42016 142015 112014 132013 162012 112011 132010 142009 132008 112007 42006 32004 32003 32002 5