Table A5.

Parameters for the GEV (Eqn 1) for the plateau portion of the historical record for women's races

Distance (m)Plateau beginsProbabilityabc
1001977>0.8010.15069.22780.0400
2001973>0.846–0.15169.10460.0901
4001974>0.6950.02938.08700.0935
8001973>0.869–0.15416.90780.0580
15001978>0.9870.14956.31560.0450
  • For the 200 m and 800 m races, all values for a are significantly less than 0 (P<0.05); a is significantly >0 for the 100 m and 1500 m races and indistinguishable from 0 for the 400 m race. The probability cited here is the likelihood that any calculated correlation between speed and year is due to chance alone