Data Item _refine.diff_density_rms
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General 
- Item name
- _refine.diff_density_rms
- Category name
- refine
- Attribute name
- diff_density_rms
- Required in PDB entries
- no
- Used in current 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
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _refine.diff_density_rms_esd | associated_esd |
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _refine_diff_density_rms | cif_core.dic | 2.0.1 |