Data Item _pdbx_dcc_density.mean_I2_over_mean_I_square
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General 
- Item name
- _pdbx_dcc_density.mean_I2_over_mean_I_square
- Category name
- pdbx_dcc_density
- Attribute name
- mean_I2_over_mean_I_square
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
Value of <I2>/<I>2 calculated by Xtriage using acentric
reflections.(untwinned: 2.000; perfect twin 1.500).
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]+)?