Cohort progression — SMS Szczecin
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 freestyle200 freestyle400 freestyle50 butterfly100 butterfly50 backstroke200 medley100 backstroke200 butterfly50 breaststroke100 breaststroke200 backstroke400 medley200 breaststroke800 freestyle1500 freestyle
Cohorts to compare: 2011 32010 92009 122008 62007 132006 52005 82004 152003 142002 232001 122000 221999 111998 281997 121996 171995 141994 261993 81992 9
50 m freestyle men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2009