[phenixbb] I vs F data input

[Ralf W. Grosse-Kunstleve]

> A quick question about diffraction data input. I just noticed that 
> phenix.refine uses Imean/SIGImean and converts these by default in my 
> refinements. Is this the preferred way or would it be better to use 
> F/SIGF (after CCP4)?

phenix.refine picks I over F only because that's more likely to
be the original measurements. (Internally it always works with F,
as you noticed.)
I'd expect very similar results starting with either I or the
corresponding F, i.e. I don't think it matters.

Ralf