Data Item _reflns.number_obs

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 86.1 % 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