Here's an Example of my Ratings for Warragul Race 6 tonight.

1 FREE DREAM 80.9 $5.6
2 TEN YEARS GONE 82.0 $3.3
3 GO VICTOR 80.9 $5.6
4 COSMIC SNOW 79.6 $10.5
5 FATHER OF MINE 78.0 $22
6 CHEWY'S GIRL 78.5 $18
7 DEMON JIM 79.5 $10.8
8 DR. WOWZER 78.4 $18

The Ratings followed by MY Estimate of the Win Odds.
If I pump those Ratings into a MCSim , I need to use 3 as the Standard Deviation figure to get a similar Market.
What the Simulator does is adds upto 3 and subtracts upto 3 randomly for each dog - I think

Thanks for your help Woof43.
I'll catch you tomorrow when I start being fair Dinkum about Winning on the Greyhounds after massive losses in the past few days.