cluster     1   number of spheres in cluster     6
    1   2.96300  -2.32400   8.26500   0.700    1                                
    2   4.58200  -0.17800   8.42300   0.700    2                                
    3   3.41500   1.26800   7.35100   0.700    3                                
    4   3.42600  -0.83400   8.03100   0.700    4                                
    5   2.69500   0.13400   7.31000   0.700    5                                
    6   4.55600   1.13400   8.04200   0.700    6