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Macromolecular dictionary (mmCIF) version 2.0.09




   The value of Rmerge(I) for significantly intense reflections
   (see _reflns.threshold_expression) in a given shell.

               sum~i~ ( sum~j~ | I~j~ - <I> | )
   Rmerge(I) = --------------------------------
                   sum~i~ ( sum~j~ <I> )

   I~j~  = the intensity of the jth observation of reflection i
   <I> = the mean of the intensities of all observations of
          reflection i

   sum~i~ is taken over all reflections
   sum~j~ is taken over all observations of each reflection.

Type: float

Mandatory item: no

_reflns_shell_Rmerge_I_gt (cif_core.dic version 2.3)
The permitted range is [0.0, infinity)

Related item: _reflns_shell.Rmerge_I_obs (alternate)

Category: reflns_shell