Cohort progression — Croatia
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 freestyle100 backstroke200 freestyle200 backstroke100 breaststroke400 freestyle100 butterfly200 butterfly200 breaststroke50 freestyle200 medley400 medley800 freestyle1500 freestyle5000 freestyle