Data Item _reflns.pdbx_Rpim_I_all


Item name
Category name
Attribute name
Required in PDB entries
Used in current PDB entries
Yes, in about 11.7 % of entries

Item Description

The precision-indicating merging R factor value Rpim, for merging all intensities in this data set. sumi [1/(Ni - 1)]1/2 sumj | Ij - <Ii> | Rpim = -------------------------------------------------- sumi ( sumj Ij ) Ij = the intensity of the jth observation of reflection i <Ii> = the mean of the intensities of all observations of reflection i Ni = the redundancy (the number of times reflection i has been measured). sumi is taken over all reflections sumj is taken over all observations of each reflection. Ref: Diederichs, K. & Karplus, P. A. (1997). Nature Struct. Biol. 4, 269-275. Weiss, M. S. & Hilgenfeld, R. (1997). J. Appl. Cryst. 30, 203-205. Weiss, M. S. (2001). J. Appl. Cryst. 34, 130-135.

Data Type

Data type code
Data type detail
float item types are the subset of numbers that are the floating numbers.
Primitive data type code
Regular expression

Allowed Boundary Conditions

Minimum Value Maximum Value


Advisory Boundary Conditions

Minimum Value Maximum Value
0.01 0.173