cluster     1   number of spheres in cluster     5
    1  -7.11400   1.16600  17.30500   0.700    1                                
    2  -5.72300   0.73400  16.98700   0.700    2                                
    3  -5.48800  -0.35500  16.12500   0.700    3                                
    4  -4.14500  -0.73100  15.84500   0.700    4                                
    5  -4.69700   1.25100  17.41000   0.700    5