Data Item _atom_site_anisotrop.U[1][2]_esd
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General 
- Item name
- _atom_site_anisotrop.U[1][2]_esd
- Category name
- atom_site_anisotrop
- Attribute name
- U[1][2]_esd
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.004 % of entries
Item Description
The standard uncertainty (estimated standard deviation)
of _atom_site_anisotrop.U[1][2].
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
- angstroms_squared
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _atom_site_anisotrop.U[1][2] | associated_value |
| _atom_site.aniso_B[1][2]_esd | conversion_constant |
| _atom_site_anisotrop.B[1][2]_esd | conversion_constant |
| _atom_site.aniso_B[1][2]_esd | alternate_exclusive |
| _atom_site.aniso_U[1][2]_esd | alternate_exclusive |
| _atom_site_anisotrop.B[1][2]_esd | alternate_exclusive |
Subcategories
| Subcategory Name | Subcategory Description |
|---|---|
| matrix | The collection of elements of a matrix. |