# i(°)        d_exact     d_approchee  Cx          Cz         Cz/Cx          Cm
  -2.5000      0.1115      0.0469      0.0488     -0.2039     -4.1740     -0.0285
  -2.0000     -0.0049     -0.0531      0.0444     -0.1366     -3.0738     -0.0352
  -1.5000     -0.2865     -0.3251      0.0415     -0.0720     -1.7358     -0.0392
  -1.0000     -2.7166     -2.8868      0.0395     -0.0132     -0.3339     -0.0412
  -0.5000      1.3592      1.3339      0.0384      0.0382      0.9948     -0.0420
   0.0000      0.7590      0.7459      0.0377      0.0835      2.2166     -0.0425
   0.5000      0.6377      0.6661      0.0358      0.0995      2.7770     -0.0387
   1.0000      0.5445      0.5578      0.0390      0.1345      3.4514     -0.0398
   1.5000      0.5038      0.5099      0.0426      0.1593      3.7359     -0.0407
   2.0000      0.4667      0.4194      0.0487      0.2444      5.0144     -0.0533
   2.5000      0.4430      0.3702      0.0548      0.3445      6.2865     -0.0669
   3.0000      0.4300      0.3543      0.0596      0.3969      6.6560     -0.0719
   3.5000      0.4207      0.3467      0.0642      0.4280      6.6636     -0.0736
   4.0000      0.4132      0.3401      0.0691      0.4596      6.6474     -0.0756
   4.5000      0.4088      0.3362      0.0745      0.4804      6.4527     -0.0770
   5.0000      0.4069      0.3378      0.0788      0.4716      5.9833     -0.0748