Data Item _reflns.number

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General

Item name: _reflns.number_obs
Category name: reflns
Attribute name: number_obs
Required in PDB entries: no
Required for PDB deposition: yes
Used in current PDB entries: Yes, in about 86.4 % of entries

Item Description

The number of reflections in the REFLN list (not the DIFFRN_REFLN list) classified as observed (see _reflns.observed_criterion). This number may contain Friedel-equivalent reflections according to the nature of the structure and the procedures used.

Additional Descriptive Information for Depositors

               The number of reflections in the REFLN list (not the DIFFRN_REFLN
               list) classified as observed (see _reflns.observed_criterion).
               This number may contain Friedel-equivalent reflections according
               to the nature of the structure and the procedures used.

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	+∞

Aliases

Alias Item Name	Dictionary Name	Dictionary Version
_reflns_number_observed	cif_core.dic	2.0.1

Data Item _reflns.number_obs