Data Item _refine_ls_shell.number_reflns_R_work
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General 
- Item name
- _refine_ls_shell.number_reflns_R_work
- Category name
- refine_ls_shell
- Attribute name
- number_reflns_R_work
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 72.7 % of entries
Item Description
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 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 _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, used throughout structural solution and refinement, i.e. the data for R-work calculation.
Data Type 
- Data type code
- int
- Data type detail
- int item types are the subset of numbers that are the negative or positive integers.
- Primitive data type code
- numb
- Regular expression
- [+-]?[0-9]+
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0 | +∞ |
Advisory Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 5 | 20000 |