Cohort progression — Czech Republic
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 backstroke200 backstroke100 freestyle400 freestyle200 medley50 backstroke100 breaststroke200 butterfly50 freestyle200 freestyle200 breaststroke100 butterfly50 butterfly50 breaststroke400 medley