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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_reflns.number_gt
Name:_reflns.number_gt
Aliases:
_reflns_number_gt
_reflns_number_observed
_reflns.number_obs
Definition:
Count of reflections in the REFLN set (not the DIFFRN_REFLN set) which
are significantly intense, satisfying the criterion specified by
_reflns.threshold_expression. It may
include Friedel equivalent reflections (i.e. those which are equivalent
under the Laue symmetry but inequivalent under the crystal class),
depending on the nature of the structure and the procedures used.
Type: Integer
Units: none
The permitted range is 0 → infinity
Category:
reflns
