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.
loop_
_diffrn_standard_refln.diffrn_id
_diffrn_standard_refln.code
_diffrn_standard_refln.index_h
_diffrn_standard_refln.index_k
_diffrn_standard_refln.index_l
s1 1 3 2 4
s1 1 1 9 1
s1 1 3 0 10