Data Item _atom_site.aniso_ratio
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General 
- Item name
- _atom_site.aniso_ratio
- Category name
- atom_site
- Attribute name
- aniso_ratio
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
Ratio of the maximum to minimum principal axes of
displacement (thermal) ellipsoids.
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 |
|---|---|
| 1.0 | +∞ |
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _atom_site_anisotrop.ratio | alternate_exclusive |