cluster     1   number of spheres in cluster    12
    1  -6.73000  23.06700   6.69500   0.700    1                                
    2  -4.73400  22.41800   7.85500   0.700    2                                
    3  -6.90100  24.14000   7.58900   0.700    3                                
    4  -4.89800  23.48000   8.74300   0.700    4                                
    5  -5.46300  21.00100   5.85900   0.700    5                                
    6  -6.33300  18.92400   4.79000   0.700    6                                
    7  -5.64300  22.18800   6.81700   0.700    7                                
    8  -5.97000  24.33100   8.61200   0.700    8                                
    9  -6.49600  19.88500   5.97400   0.700    9                                
   10  -6.40800  19.17900   7.25700   0.700   10                                
   11  -5.25300  18.77100   4.21000   0.700   11                                
   12  -6.19700  25.91800   9.95100   0.700   12