Dataset for article titled "Assessing continuum plasticity postulates with grain stress and local strain measurements in triaxially compressed sand"

All authors acknowledge support from the U.S. National Science Foundation CAREER Award No. CBET-1942096. Experiments were performed under General User Proposal (GUP)-72658 at the Advanced Photon Source (APS) beamline ID-1. The authors are grateful for this beamtime and assistance from beamline scientists Peter Kenesei and Jun-Sang Park. Use of APS, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357.