Data Item _diffrn_standards.decay_%

General

Item name
_diffrn_standards.decay_%
Category name
diffrn_standards
Attribute name
decay_%
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The percentage decrease in the mean of the intensities for the set of standard reflections from the start of the measurement process to the end. This value usually affords a measure of the overall decay in crystal quality during the diffraction measurement process. Negative values are used in exceptional instances where the final intensities are greater than the initial ones.

Data Type

Data type code
float
Data type detail
int 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]+)?

Allowed Boundary Conditions

Minimum Value Maximum Value

-∞

100.0

Aliases

Alias Item Name Dictionary Name Dictionary Version
_diffrn_standards_decay_% cif_core.dic 2.0.1