Hi,
It is up to you to choose option 1, depending on what information you want to get. Do you have anomalous data?
Concerning the difference between "no options" and "option 1", what change in statistics is bothering you?
It is expected that multiplicity (redundancy) decreases, as Friedel pairs are considered separate.
Rmerge is (slightly) higher for the no merge option, as both
Friedels are treated as equivalent (--> higher multiplicity --> higher Rmerge) and internal agreement of the intensities is worse, if anomalous differences are large.
Similarly, completeness is expected to be sligthly lower if Friedel pairs are considered separate.
The entries for I/sigma seem to be not according to column headers, so I am not sure, what value belongs to which option.
If the data is not anomalous, I would not choose option 1 (unless you have a reason you want to use it).
Best wishes,
Dorothee