To add one more nugget, in your pdb you might see a
REMARK 3 MIN(FOBS/SIGMA_FOBS) : 1.36
or some such thing. Ignore it (I am not sure why this isn't closer to
zero, but that must be a result of French/Wilson). This is *not* your
observed criterion for sigma for F's, although I have seen it confuse
people to think so. Instead, go with Matthew's suggestion.
Engin
On 11/14/13, 9:25 AM, Matthew Franklin wrote:
Dear Faisal -
HKL2000 (Denzo/Scalepack) use I greater than -3 sigma (that's NEGATIVE
3) as the observed criterion, so that's what you would put down for
this entry. There is another place where you're asked to provide an
observed criterion for F's used during refinement. I always put down
0 (i.e. use all F's) for this one.
I have no idea what Scala does.
- Matt
On 11/14/13 6:06 AM, Faisal Tarique wrote:
Dear all
I request you to please explain the "Observed criterion sigma" value
required during pdb deposition. Does it depends on the methods of data
integration and scaling ? if yes then what are the values for the data
processed through scalepack2mtz (HKL2000) and scala (mosflm)..
