I'm currently researching the northern most geographic locations where RES can survive, and thought this link might be interesting to some....my apologies if it's been posted here before.

http://www.michigandnr.com/publications/pdfs/ifr/ifrlibra/technical/reports/2003-3tr.pdf

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.