cluster     1   number of spheres in cluster    12
    1  31.36100  -7.01500  66.61500   0.700    1                                
    2  32.97800  -8.18900  67.92100   0.700    2                                
    3  31.42000  -5.93400  67.45000   0.700    3                                
    4  33.04100  -7.08700  68.81300   0.700    4                                
    5  32.09700  -9.34600  65.84600   0.700    5                                
    6  34.39200  -8.71800  64.89300   0.700    6                                
    7  32.12400  -8.18400  66.85200   0.700    7                                
    8  32.27200  -5.94500  68.53800   0.700    8                                
    9  32.87400  -8.75000  64.68400   0.700    9                                
   10  32.18100  -8.52100  63.41400   0.700   10                                
   11  32.35900  -4.81800  69.36900   0.700   11                                
   12  34.96900  -7.66100  64.65100   0.700   12