On Saturday, December 23, 2017 at 1:31:46 PM UTC-5, wrote:
I'd appreciate it if somebody would answer "what is G/F" ... is that the wing loading and if so in what units?

I haven't really looked deeply into this spread-sheet but most likely G/F stands for 'Gewicht / Flaeche' or weight(mass)/surface area. The typical UoM would be kg/m^2

Uli
'AS'