The number of reflections that satisfy the resolution limits
established by _refine_ls_shell.d_res_high and
_refine_ls_shell.d_res_low and the observation limit
established by _reflns.observed_criterion, and that were used
as the test reflections (i.e. were excluded from the refinement)
when the refinement included the calculation of a 'free'
R factor. Details of how reflections were assigned to the
working and test sets are given in _reflns.R_free_details.

Additional Descriptive Information for Depositors

Within the indicated shell, the number of reflections that satisfy both resolution limits and observation criterion, and that were used pre-allocated as the cross-validation test reflections before a structure solution process. These data were not used in the structure solution and refinement process and were used to calculate the 'free' R factor

Data Type

Data type code

int

Data type detail

int item types are the subset of numbers that are the negative
or positive integers.