Cohort progression — Osby Simsällskap
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 breaststroke50 backstroke100 freestyle50 butterfly100 breaststroke100 backstroke100 medley200 medley25 breaststroke25 freestyle200 freestyle200 breaststroke25 backstroke100 butterfly25 butterfly400 freestyle200 backstroke400 medley200 butterfly
Cohorts to compare: 2018 42017 102016 92015 132014 92013 132012 122011 52010 72009 62008 32007 52006 32002 4