Cohort progression — MPKS Orka Ciechanów
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 butterfly50 backstroke50 breaststroke100 breaststroke100 backstroke100 butterfly100 medley200 freestyle200 medley200 breaststroke25 freestyle25 backstroke200 backstroke200 butterfly400 freestyle25 breaststroke25 butterfly800 freestyle
Cohorts to compare: 2018 72017 182016 122015 182014 222013 112012 122011 132010 112009 32008 112007 202006 162005 142004 122003 162002 222001 212000 111999 41997 31996 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2018 born 2017 born 2016 born 2015