cluster     1   number of spheres in cluster     9
    1  -1.96600   6.41900  19.95800   0.700    1                                
    2  -1.19700   7.51300  19.38400   0.700    2                                
    3  -3.32900   6.64100  20.38800   0.700    3                                
    4  -1.79900   8.83000  19.24500   0.700    4                                
    5  -3.93700   7.95700  20.25100   0.700    5                                
    6  -3.18100   9.06900  19.67700   0.700    6                                
    7  -3.82500  10.46200  19.53100   0.700    7                                
    8  -3.06900  11.51300  19.24900   0.700    8                                
    9  -5.12900  10.59300  19.68800   0.700    9