Extended Data Fig. 3: Modelling the acoustic velocity of bridgmanite to derive Cij at 31.76 GPa.

Vertical lines represent standard deviations (+1σ) and are not shown when smaller than symbols. Solid data points are velocity data from Kurnosov et al.3; the dashed lines are velocity-fitting curves from Kurnosov et al.3; and the solid lines are velocity-fitting curves using the Cij derived from the covariance matrix analysis in this study. Red, VP; green, Vs1; blue, Vs2. The orientations of the crystal platelets are given in parentheses.