4

Nb      0.010155178070054      0.093726719254437     -0.059592905162126
Nb      1.689853886102896      1.888557639447170      0.024803646080788
Nb      1.626065386174641     -0.134374438378859      1.609121757374030
Nb      0.068080410396120      1.632146300801893      1.799896708664751