sigma_xx sigma_yy sigma_zz sigma_xy sigma_yz sigma_xz
 -0.7555  -0.4768  -0.7162  -0.5053  -0.3833  -0.5240
 -0.3636   0.3934  -1.1640   0.5998  -0.2913  -0.1897
 -0.7512   0.3241  -0.6974  -0.0958   0.3098  -0.1909
  0.0640  -0.9671  -0.2331  -0.3446  -0.2364   0.2266
  0.4646  -0.5620  -0.5469   0.0633   0.3070   0.1181
  0.3182  -0.7843  -0.8226   0.0796  -0.4133   0.0806
  0.6241   0.4978   0.7256  -0.4206   0.1037  -0.2428
 -0.5649  -0.6839  -0.3763  -0.4083  -0.5166  -0.2277
 -0.0008  -0.0208   0.2250   0.0084  -0.2563   0.3474
  0.4835   0.0019  -0.2318  -0.5178   0.5804   0.0523
  0.6581   0.8504   0.7204  -0.7077  -0.7765   0.1555
  0.1089   0.5244   0.4208   0.2810  -0.3590   0.3177
  0.3936   0.6127   0.2503  -0.4664  -0.2756  -0.0667
 -0.6121  -0.0897   0.3806  -0.6799  -0.3974   0.2856
 -0.0705   0.7420  -1.0955  -0.0364  -0.1979   0.0763
 -0.1916  -0.0286  -0.7245   0.3291   0.0145   0.2756
 -0.2772  -0.1984  -1.4151   0.2380   0.4854   0.1977