Data Item _diffrn_reflns.pdbx_observed_criterion
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General 
- Item name
- _diffrn_reflns.pdbx_observed_criterion
- Category name
- diffrn_reflns
- Attribute name
- pdbx_observed_criterion
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
The criterion used to classify a reflection as 'observed'. This
criterion is usually expressed in terms of a sigma(I) or
sigma(F) threshold.
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]+)?