Data Item _refine_analyze.Luzzati_sigma_a_obs

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 7.4 % 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.

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