cluster     1   number of spheres in cluster     6
    1  -1.76900   2.88400   9.93200   0.700    1                                
    2   0.14900   1.96100  11.52900   0.700    2                                
    3   1.91200   2.88900  10.59800   0.700    3                                
    4  -0.27300   2.71100  10.44000   0.700    4                                
    5   0.86900   3.28800   9.86900   0.700    5                                
    6   1.51500   2.09200  11.60200   0.700    6