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Core CIF Dictionary version 2.3




Category: reflns_shell

Data type: numb

Related item: '_reflns_shell_Rmerge_F_obs'
Related function: alternate

Must appear in a looped list

Enumeration range: 0.0 -> infinity


   The value of Rmerge(F) for significantly intense reflections
   (see _reflns_threshold_expression) in a given shell.

               sum~i~ ( sum~j~ | F~j~ -  | )
   Rmerge(F) = --------------------------------
                   sum~i~ ( sum~j~  )

   F~j~  = the amplitude of the jth observation of reflection i
    = the mean of the amplitudes of all observations of
          reflection i

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

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