Cohort progression — Niezrzeszony
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 butterfly50 breaststroke50 backstroke100 breaststroke400 freestyle100 medley200 freestyle100 backstroke200 medley100 butterfly200 breaststroke200 backstroke25 freestyle800 freestyle200 butterfly25 backstroke1500 freestyle400 medley
Cohorts to compare: 2018 82017 62016 132015 32014 42013 32012 52010 92009 142008 122007 212006 112005 202004 232003 202002 182001 132000 191999 191998 171997 241996 171995 171994 171993 181992 171991 241990 191989 161988 131987 201986 261985 301984 251983 271982 151981 181980 231979 221978 251977 231976 231975 201974 191973 181972 161971 121970 171969 151968 201967 111966 101965 141964 101963 81962 81961 71960 91959 81958 101957 81956 31955 111954 91953 81952 51951 81950 41949 31948 81947 31946 31944 4