There is more than one Tourny Speed Green. Normal and Faster. You don't know which one until you start to putt.
I don't use the charts, but they give you a very good idea for starters.
17ft and 10 downhill is not the same as 9ft and 2 downhill. The more downhill run you have the less you have to hit.
Here is my simple template for tourny speed greens....
15ft putt will travel 20ft
18ft putt will go 24ft
30ft putt will go 40ft
36ft putt will travel 48ft
and so on.....
Just a simple template, using the Rozza putter.... you have to add or subtract downhill uphill and left or right slope on the greens, but to keep things simple that's a good starting point and the rest will come from experience :)
-Roger