Data Item _phasing_MIR_der_shell.fom
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General 
- Item name
- _phasing_MIR_der_shell.fom
- Category name
- phasing_MIR_der_shell
- Attribute name
- fom
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
The mean value of the figure of merit m for reflections for this
derivative in this shell.
int Palpha exp(i*alpha) dalpha
m = --------------------------------
int Palpha dalpha
Palpha = the probability that the phase angle alpha is correct
int is taken over the range alpha = 0 to 2 pi.
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]+)?
Allowed Boundary Conditions
| Minimum Value | Maximum Value |
|---|---|
| 0.0 | +∞ |