Data Item _refine_analyze.Luzzati_sigma_a_free
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General 
- Item name
- _refine_analyze.Luzzati_sigma_a_free
- Category name
- refine_analyze
- Attribute name
- Luzzati_sigma_a_free
- Required in PDB entries
- Used in current PDB entries
- Yes, in about 7.0 % of entries
Item Description
The value of sigmaa used in constructing the Luzzati plot for
the reflections treated as a test set in refinement. The
details of the estimation of sigmaa can be specified
in _refine_analyze.Luzzati_sigma_a_free_details.
Ref: Luzzati, V. (1952). Acta Cryst. 5, 134-136.
Additional Descriptive Information for Depositors
The value of sigma~a~ used in constructing the
Luzzati plot for the reflections treated as a
test set in refinement. The details of the estimation
of sigma~a~ can be specified in
_refine_analyze.Luzzati_sigma_a_free_details.
Ref: Luzzati, V. (1952). Acta Cryst. 5, 134-136.
Additional Item Example for Depositors
0.5
Data Type 
- Data type code
- float
- Data type detail
- int 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]+)?
- Units
- angstroms