Shaun

These fiqures are from a Roger Biggs book and at the time of publication the data was arrived from 1.3 million runs and 126 000 races.

Spell count of more than 12 weeks(>84days)
run 1 run%-11.86 win%-9.83 rf-0.828
run 2 run%-10.51 win%-9.29 rf-0.884
run 3 run%- 9.13 win%-9.38 rf-1.027

Hope that helps?