No idea but Triggaaar got me into Exp 361 with their big block graphs.
Through the season I've slowly been sucked into the world according to 361.
I've never bothered to back check the facts - I'm that much of a fanboy.
Why would I they're Albion positive, and look pretty.
I assume it's an extrapolation of the first half going forward.
Basically Preston did very little in the first half so we should expect too much in the second.