Cohort progression — Slovenia
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 200 freestyle100 breaststroke200 medley200 backstroke200 breaststroke400 freestyle100 freestyle100 backstroke100 butterfly50 freestyle800 freestyle400 medley200 butterfly1500 freestyle50 breaststroke50 butterfly