cluster     1   number of spheres in cluster    12
    1  -4.66700   4.41900  14.54100   0.700    1                                
    2  -3.74300   3.34000  14.75000   0.700    2                                
    3  -5.97600   4.32800  15.06200   0.700    3                                
    4  -4.14400   2.17800  15.48100   0.700    4                                
    5  -6.39100   3.17500  15.79500   0.700    5                                
    6  -5.49600   2.06800  16.02600   0.700    6                                
    7  -5.69400  -0.47200  16.19400   0.700    7                                
    8  -5.34000   0.80300  18.15400   0.700    8                                
    9  -7.38600   0.87000  17.06200   0.700    9                                
   10  -3.25500   1.16000  15.67400   0.700   10                                
   11  -7.66100   3.13300  16.28600   0.700   11                                
   12  -5.99400   0.79600  16.85900   0.700   12