Data Item _refln_sys_abs.I_over_sigmaI
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General 
- Item name
- _refln_sys_abs.I_over_sigmaI
- Category name
- refln_sys_abs
- Attribute name
- I_over_sigmaI
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.004 % of entries
Item Description
The ratio of _refln_sys_abs.I to _refln_sys_abs.sigmaI. Used
to evaluate whether a reflection that should be systematically
absent according to the designated space group is in fact
absent.
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]+)?