Data Item _refine.ndb_ls_sigma_F
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General 
- Item name
- _refine.ndb_ls_sigma_F
- Category name
- refine
- Attribute name
- ndb_ls_sigma_F
- Required in PDB entries
- Used in currrent PDB entries
- No
Item Description
Data cutoff (SIGMA(F))
Additional Descriptive Information for Depositors
The cut-off limit for structure factors used in refinement in units of their estimated standard deviations.This is the cutoff used for refinement, not data collection.
Additional Item Example for Depositors
2.0
Data Type 
- Data type code
- float
- Data type detail
- int 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]+)?