sigma_xx sigma_yy sigma_zz sigma_xy sigma_yz sigma_xz
  0.3886   1.0726   0.2159  -0.4935   0.1113  -0.0565
 -1.2795  -1.2148  -0.7063   0.5015   0.3370   0.1308
 -0.7883  -0.4077  -0.3491  -0.4535   0.0863  -0.0758
 -0.1431  -0.3128  -0.8946   0.1769   0.3153   0.2633
 -0.4068  -1.7086   0.3934   0.1284  -0.3034   0.0662
 -1.4586  -0.7884  -0.5208   0.6313   0.0133   0.2842
 -0.0631   0.2393   0.0117  -0.0296  -0.1258   0.0923
 -0.1513  -0.2031  -0.4311   0.1442  -0.0653  -0.0660
 -0.8149  -0.7417  -1.7374  -0.3005   0.1825   0.1870
 -0.7673  -1.4909  -0.1691   0.0521  -0.2468  -0.2525
 -0.8104  -0.3724  -1.0200   0.4905  -0.6584   0.4154
 -1.3804  -1.7310  -0.8433  -0.3836   0.2963  -0.0406
  0.0460  -0.5471   0.1712  -0.1314  -0.1003   0.0581
 -1.1309  -0.3809  -1.0477  -0.0457   0.5086   0.0175
 -0.5441  -0.6154  -0.3251   0.3712   0.1029   0.0649
 -1.1442   0.2696  -0.3366  -0.0713   0.1755   0.5002
 -0.6881  -0.3810   0.5945  -0.0239   0.0063  -0.0730