Data Item _em_imaging.calibrated_defocus_min
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General 
- Item name
- _em_imaging.calibrated_defocus_min
- Category name
- em_imaging
- Attribute name
- calibrated_defocus_min
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 0.2 % of entries
Item Description
The minimum defocus value of the objective lens (in nanometers) used
to obtain the recorded images.
Item Example
1200
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]+)?
- Units
- nanometers