PDBx/mmCIF
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Data Item _refine_analyze.Luzzati_sigma_a_obs

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General

Item name
_refine_analyze.Luzzati_sigma_a_obs
Category name
refine_analyze
Attribute name
Luzzati_sigma_a_obs
Required in PDB entries
no
Used in current PDB entries
Yes, in about 9.8 % of entries

Item Description

The value of sigmaa used in constructing the Luzzati plot for reflections classified as observed. Details of the estimation of sigmaa can be specified in _refine_analyze.Luzzati_sigma_a_obs_details. Ref: Luzzati, V. (1952). Traitement statistique des erreurs dans la determination des structures cristallines. Acta Cryst. 5, 802-810.

Additional Descriptive Information for Depositors 

               The value of sigma~a~ used in constructing the Luzzati plot for
               reflections classified as observed. Details of the
               estimation of sigma~a~ can be specified in
               _refine_analyze.Luzzati_sigma_a_obs_details.

               Ref:  Luzzati, V. (1952). Traitement statistique des erreurs
               dans la determination des structures cristallines. Acta
               Cryst. 5, 802-810.

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]+)?
Units
angstroms