cluster     1   number of spheres in cluster    13
    1  -3.33800   3.34900  14.70600   0.700    1                                
    2  -5.48900   4.36700  14.59200   0.700    2                                
    3  -3.85800   2.27600  15.43200   0.700    3                                
    4  -6.02300   3.32600  15.31100   0.700    4                                
    5  -3.64300   5.51400  13.37100   0.700    5                                
    6  -2.56900   6.42400  13.88100   0.700    6                                
    7  -4.13200   4.40500  14.28600   0.700    7                                
    8  -5.21100   2.28500  15.74700   0.700    8                                
    9  -2.15600   7.19200  12.67000   0.700    9                                
   10  -5.37700  -0.42700  16.06100   0.700   10                                
   11  -7.31200   1.05800  16.55500   0.700   11                                
   12  -5.32000   1.12500  18.02500   0.700   12                                
   13  -5.89500   0.94000  16.71300   0.700   13