I have learned a little more about all this.
Thank you.

No problem, Keith. Happy to be of service. I do hope that you realise that this does mean that we have shown statistics taken in isolation to be, at best, skewed and, at worst, misleading. Which is why you may have spotted that I will question any statistics quoted, not jut by you but by anyone. Even if they support what I am saying! As someone at lot wittier, and probably wiser, than me once said. There are lies, damned lies and statistics.

Cheers

DtG