Cohort progression — Gdańskie Ratownictwo Wodne
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 100 unknown50 unknown50 manikin carry100 manikin carry with fins100 manikin tow with fins100 obstacle swim100 rescue medley200 unknown150 unknown200 obstacle swim200 super lifesaver12 unknown25 unknown500 unknown
100 m UNKNOWN men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2014 born 2012