Cohort progression — Kolbotn IL

Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.

Sex: WomenMen Pool: 25 m pool50 m pool

Event: 50 freestyle 50 butterfly 50 backstroke 50 breaststroke 100 freestyle 100 backstroke 100 breaststroke 200 medley 100 butterfly 200 backstroke 200 freestyle 200 breaststroke 400 medley

Cohorts to compare: 2011 5 2010 5 2009 13 2008 5 2007 6 2006 3

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