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Core CIF Dictionary version 2.3




Category: refine

Data type: char

Permitted values:

sigma "based on measured s.u.'s"
unit 'unit or no weights applied'
calc 'calculated weights applied'

Enumeration default: sigma


The weighting scheme applied in the least-squares process. The standard code may be followed by a description of the weight (but see _refine_ls_weighting_details for a preferred approach).

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