Data Item _refine.diff_density_rms

General

Item name
_refine.diff_density_rms
Category name
refine
Attribute name
diff_density_rms
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The root-mean-square-deviation of the electron density in the final difference Fourier map. This value is measured with respect to the arithmetic mean density and is derived from summations over each grid point in the asymmetric unit of the cell. This quantity is useful for assessing the significance of the values of _refine.diff_density_min and _refine.diff_density_max, and also for defining suitable contour levels.

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]+)?
Units
electrons_per_angstroms_cubed

Aliases

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