Data items in the DIFFRN_STANDARD_REFLN category record details
about the reflections treated as standards during the measurement
of a set of diffraction intensities.
Note that these are the individual standard reflections, not the
results of the analysis of the standard reflections.
Example 2 - based on data set TOZ of Willis, Beckwith & Tozer
[Acta Cryst. (1991), C47, 2276-2277].
s1 1 3 2 4
s1 1 1 9 1
s1 1 3 0 10
Key Category Items
Items in Category diffrn_standard_refln