cluster     1   number of spheres in cluster    21
    1  29.23300  -0.51700   5.73200   0.700    1                                
    2  27.08000   3.78800   6.44500   0.700    2                                
    3  27.26700  -1.31400   3.69600   0.700    3                                
    4  28.49900  -2.11900   3.24900   0.700    4                                
    5  25.59800   1.37300   3.83500   0.700    5                                
    6  29.19800   2.39700   4.83300   0.700    6                                
    7  24.79800   2.45000   4.54000   0.700    7                                
    8  26.94100   6.30700   4.68500   0.700    8                                
    9  29.95200   1.27100   4.13000   0.700    9                                
   10  27.71900   5.03700   4.36800   0.700   10                                
   11  24.85400   4.86600   4.27200   0.700   11                                
   12  26.99400   1.22900   4.43600   0.700   12                                
   13  27.79400   0.12100   3.73300   0.700   13                                
   14  27.76400   2.54800   4.31400   0.700   14                                
   15  29.71000  -1.18100   3.38000   0.700   15                                
   16  25.55200   3.75600   4.54900   0.700   16                                
   17  25.50400   6.18500   4.25700   0.700   17                                
   18  29.20900  -0.04900   4.27300   0.700   18                                
   19  27.03300   3.77200   4.91400   0.700   19                                
   20  30.85000  -1.86300   3.90600   0.700   20                                
   21  24.88900   7.17100   3.87200   0.700   21