Data Item _reflns_shell.pdbx_CC_half

General

Item name
_reflns_shell.pdbx_CC_half
Category name
reflns_shell
Attribute name
pdbx_CC_half
Required in PDB entries
no
Used in current PDB entries
Yes, in about 3.9 % of entries

Item Description

The Pearson's correlation coefficient expressed as a decimal value between the average intensities from randomly selected half-datasets within the resolution shell. Ref: Karplus & Diederichs (2012), Science 336, 1030-33

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]+)?

Allowed Boundary Conditions

Minimum Value Maximum Value
-1 1