Data Item _refine.ls_percent_reflns_R_free
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General 
- Item name
- _refine.ls_percent_reflns_R_free
- Category name
- refine
- Attribute name
- ls_percent_reflns_R_free
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 76.2 % of entries
Item Description
The number of reflections that satisfy the resolution limits
established by _refine.ls_d_res_high and _refine.ls_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,
expressed as a percentage of the number of geometrically
observable reflections that satisfy the resolution limits.
Data Type 
- Data type code
- float
- Data type detail
- float item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?