What I meant is: I actually don’t have anomalous signal, so when I use I+/I-, kind of like I use Imean twice for each reflection. Can I do that? My guess is that the resolution is low, so double reflection/parameter ratio really benefits the refinement, although overall the weight for x-ray term is not change, because rms bond and angle are similar.
Newer versions are better for my other refinement with higher resolution, but not this data set.
I use same data set for refinement, so Rfree is also marked for same reflection. The only difference is that I chose “Data labels” from Phenix IMEAN or I(+) I(-).
What I meant is that the IMEAN set is not the same as I(+),I(-) at least because the number of reflections in IMEAN is not the same as in I(+),I(-).
By the way, I use version 1.8.2 for refinement. Newer versions gives higher R/Rfree.
Should be the other way around...
Pavel