sigma_xx sigma_yy sigma_zz sigma_xy sigma_yz sigma_xz
 -0.5421  -1.0710  -0.5043  -0.1678  -0.1389   0.0410
 -0.5807  -0.0251  -0.4643   0.3983   0.0399   0.0543
  0.4389  -0.3832   0.9336   0.1561   0.6007  -0.2949
 -1.9054  -0.7109  -0.3228   0.4699  -0.5036  -0.0789
 -0.2826  -0.9801  -0.5631   0.0970   0.0462  -0.4955
  0.4171   0.1804  -0.0780   0.0079   0.1303  -0.2932
 -0.0433   0.0582  -0.1179  -0.0883   0.3140   0.4055
  0.1510  -0.3729  -0.0899   0.0447   0.5579   0.0848
 -0.0158  -0.1063   0.4087   0.2278  -0.5183   0.2656
 -0.4097  -0.4398  -0.4626  -0.0290  -0.2056  -0.4122
 -0.4979  -0.6078  -0.0471  -0.2904  -0.1415   0.4760
  0.7016   0.2471   0.5829   0.1199  -0.1293   0.1289
 -0.5177  -1.8617  -1.1699   0.0694   0.1129   0.0022
 -0.2542   0.0530   1.4929   0.2842   0.7010   0.1517
 -1.2161  -1.2293  -0.7782   0.6234  -0.0761   0.7820
  0.5151  -0.1342   0.0259  -0.5244   0.3580  -0.2787
 -0.6003  -0.2327  -0.6349  -0.4117   0.6359  -0.0458