Data Item _refln.F_meas_sigma_au
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General 
- Item name
- _refln.F_meas_sigma_au
- Category name
- refln
- Attribute name
- F_meas_sigma_au
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.02 % of entries
Item Description
The standard uncertainty (estimated standard deviation) of
_refln.F_meas_au in arbitrary units.
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
- arbitrary
Related Items 
| Related Item Name | Relation Type |
|---|---|
| _refln.F_meas_au | associated_value |
| _refln.F_meas_sigma | conversion_arbitrary |