Cohort progression — UTS Orlik Lublin
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 freestyle200 freestyle400 freestyle100 freestyle50 backstroke100 backstroke50 butterfly200 medley50 breaststroke200 backstroke800 freestyle100 breaststroke100 medley100 butterfly400 medley200 breaststroke1500 freestyle