Cohort progression — SSP Orka Iława
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 backstroke50 butterfly50 breaststroke200 freestyle100 medley100 backstroke100 butterfly100 breaststroke25 freestyle200 medley25 backstroke400 freestyle200 backstroke25 breaststroke25 butterfly200 breaststroke800 freestyle200 butterfly
Cohorts to compare: 2018 32017 62016 152015 182014 92013 92012 62011 122010 92009 132008 192007 142006 62005 132004 102003 42002 132001 132000 81999 4
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015