Data Item _refln.pdbx_I_minus_sigma
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General 
- Item name
- _refln.pdbx_I_minus_sigma
- Category name
- refln
- Attribute name
- pdbx_I_minus_sigma
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.001 % of entries
Item Description
The standard uncertainty (derived from measurement) of the
intensity I(-h,-k,-l) partner of the Friedel pair.
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]+)?