Macromolecular dictionary (mmCIF) version 2.0.09




   The number of reflections that satisfy the resolution limits
   established by _refine_hist.d_res_high and
   _refine_hist.d_res_low and the observation limit
   established by _reflns.observed_criterion, and that were used
   as the working reflections (i.e. were included in 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

Type: int

Mandatory item: no

The permitted range is [0, infinity)

Category: refine_hist