cluster     1   number of spheres in cluster    15
    1   6.99000   1.44000  11.32300   0.700    1                                
    2   9.00200   1.87600  12.51500   0.700    2                                
    3   3.47800  -5.27700  15.90200   0.700    3                                
    4   2.34200  -3.45700  17.04700   0.700    4                                
    5   7.16300   0.77200  13.78700   0.700    5                                
    6   4.31000  -1.64200  15.10900   0.700    6                                
    7   5.83000  -3.68400  15.55100   0.700    7                                
    8   7.86100   0.86200  12.41800   0.700    8                                
    9   3.26900  -3.76100  15.88900   0.700    9                                
   10   4.56700  -2.90800  15.94000   0.700   10                                
   11   5.90400  -0.10100  13.81400   0.700   11                                
   12   5.46500  -0.67500  15.13700   0.700   12                                
   13   4.88100   0.72200  13.12600   0.700   13                                
   14   5.36900   0.25200  16.19000   0.700   14                                
   15   6.28100  -3.72800  14.37400   0.700   15