cluster     1   number of spheres in cluster     5
    1  19.43100  20.18500  32.49700   0.700    1                                
    2  16.33900  21.88600  33.52300   0.700    2                                
    3  17.27100  20.91800  32.78500   0.700    3                                
    4  15.73100  21.21700  34.63500   0.700    4                                
    5  18.62000  21.11600  33.22000   0.700    5