Data Item _cell.angle_alpha_esd
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General 
- Item name
- _cell.angle_alpha_esd
- Category name
- cell
- Attribute name
- angle_alpha_esd
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.06 % of entries
Item Description
The standard uncertainty (estimated standard deviation)
of _cell.angle_alpha.
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
- degrees
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _cell.angle_alpha | associated_value |
Dependent Items
Subcategories
| Subcategory Name | Subcategory Description |
|---|---|
| cell_angle_esd | The collection of estimated standard deviations of the alpha, beta, and gamma angles of a unit cell. |