This is the progression of world record improvements of the pole vault W70 division of Masters athletics.
Key
HeightAthleteNationalityBirthdateAgeLocationDateRef2.95 mNadine O'Connor5 March 1942San Diego13 July 20122.88 m Nadine O'Connor5 March 1942Chula Vista9 June 2012http://www.mastersrankings.com/indresults.php?season=Outdoor&year=2014&nameno=USA32474111NADINEOCONNOR&country=USA 2.80 mNadine O'Connor5 March 1942San Marcos7 April 20122.77 mNadine O'Connor5 March 1942San Diego17 March 20122.36 mBecky Lynn Sisley10 May 1939Gresham27 June 20092.32 mMidori Yamamoto13 September 1934Bangkok3 December 20042.16 mLeonore McDaniels6 March 1928Eugene10 August 1998
References
Masters Athletics Pole Vault list