Cohort progression — MKS TRÓJKA Łódź
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 freestyle100 breaststroke200 freestyle50 butterfly100 backstroke50 breaststroke50 backstroke100 butterfly400 freestyle200 medley200 backstroke200 breaststroke100 medley200 butterfly400 medley800 freestyle25 freestyle1500 freestyle25 backstroke
Cohorts to compare: 2017 212016 282015 232014 262013 262012 282011 272010 392009 282008 222007 342006 412005 162004 242003 182002 92001 272000 351999 231998 261997 331996 161995 101994 151993 111992 5
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2016 born 2015 born 2014