cluster     1   number of spheres in cluster    10
    1  -7.51900  -3.96800 -20.29500   0.700    1                                
    2  -6.50500  -4.48100 -19.25700   0.700    2                                
    3  -8.35800  -2.94600 -19.54100   0.700    3                                
    4  -8.56900  -2.43200 -16.90200   0.700    4                                
    5  -7.29100  -4.57500 -17.93500   0.700    5                                
    6  -7.46300  -1.40400 -16.58200   0.700    6                                
    7  -7.64200  -0.51800 -15.45000   0.700    7                                
    8  -8.29300  -3.40000 -18.06000   0.700    8                                
    9  -7.63200  -5.83400 -17.39300   0.700    9                                
   10  -6.45800  -1.31300 -17.21700   0.700   10