cluster     1   number of spheres in cluster    13
    1  -4.66700   6.91000  12.78700   0.700    1                                
    2  -4.41600   4.01800  14.94400   0.700    2                                
    3  -5.01200   2.21100  16.13100   0.700    3                                
    4  -5.16800   5.76400  13.64100   0.700    4                                
    5  -5.09800  -0.41200  16.29500   0.700    5                                
    6  -3.36600   3.40000  15.36800   0.700    6                                
    7  -3.71600   2.30100  16.08400   0.700    7                                
    8  -4.15800   5.06200  14.17900   0.700    8                                
    9  -6.37400   5.56100  13.76100   0.700    9                                
   10  -5.44300   0.91800  18.40300   0.700   10                                
   11  -7.24900   0.99300  16.83900   0.700   11                                
   12  -5.93100   3.41800  15.34600   0.700   12                                
   13  -5.77500   0.86000  16.97700   0.700   13