Cohort progression — MKS ,,Pałac Młodzieży''
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 freestyle100 freestyle50 butterfly100 medley50 backstroke100 backstroke200 freestyle100 breaststroke50 breaststroke100 butterfly200 backstroke400 freestyle200 medley200 breaststroke800 freestyle1500 freestyle
Cohorts to compare: 2010 112009 122008 172007 262006 142005 182004 92003 42002 82001 91999 81998 31997 41995 7
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2007