Macromolecular dictionary (mmCIF) version 2.0.09
The smallest value in angstroms for the interplanar spacings for the reflections in each measured reflection class. This is called the highest resolution for this reflection class.
Mandatory item: noAlias:
_diffrn_reflns_class_d_res_high (cif_core.dic version 2.3)
The permitted range is [0.0, infinity)