(color online) The microscopic deviatoric stress as a function of pressure. The experimental data measured in this work are denoted by the open diamonds. Those of Ref. [16] obtained from microscopic deviatoric stress analysis (S2015-1) and microscopic deviatoric strain analysis (S2015-2) are denoted by the solid squares and asterisks, respectively. Those of Ref. [15] (S2011) are denoted by the solid triangles.