4

Nb      0.177514421049269     -0.046898100679731     -0.094766473163776
Nb      1.362444678868793      1.777115278894340     -0.121288819935461
Nb      1.112787439779309     -0.268748876757718      1.218243514748061
Nb      0.307056932889278      1.234403840415356      1.331885360766709