From "Winning More":

0 kg 1.00
0.5 0.90
1.0 0.80
1.5 0.67
2.0 0.57
2.5 0.50
3.0 0.40
3.5 0.33
4.0 0.25
4.5 0.20
5.0 0.14
5.5 0.11
6.0 0.08
6.5 0.06
7.0 0.05
7.5 0.04
8.0 0.03
8.5 0.03
9.0 0.02
9.5 0.01

Hope I haven't broken any rules. And I share your formatting problems, Dr Ron.

Cheers,

H.