Well Clint
I deliberately didn't mention the appx range, since you would just go mad....
As is more or less normal by now, we have about half of them compromising SVA production.
The more we dig into all this, the more it feels (to me) there is too much guesswork involved and without being on the inside knowing why/how these guessworks have evolved it is difficult to have opinions.
None of our Italian researchers were "born yesterday". They are all very skillful and dedicated individuals who have spent more time than most checking archives etc. We also have to remember that with time theories evolve.
If you are interested, send me an e-mail or PM and I will give you the range.
Cheers
Stig