cluster     1   number of spheres in cluster    20
    1  14.59900  -5.29500  11.41200   0.700    1                                
    2  15.34800  -5.94100  12.41000   0.700    2                                
    3  15.22000  -4.33300  10.57000   0.700    3                                
    4  17.40800  -4.68100  11.72300   0.700    4                                
    5  16.90300  -7.93700  17.68600   0.700    5                                
    6  18.21400  -7.86600  16.85400   0.700    6                                
    7  16.87200  -6.60700  18.48800   0.700    7                                
    8  16.85900  -5.65700  12.58500   0.700    8                                
    9  16.61700  -4.04900  10.72600   0.700    9                                
   10  18.25200  -6.98200  15.66600   0.700   10                                
   11  17.74400  -6.06600  13.74800   0.700   11                                
   12  15.48900  -6.18300  18.96800   0.700   12                                
   13  17.29300  -6.74100  14.91200   0.700   13                                
   14  19.01500  -5.91300  13.83700   0.700   14                                
   15  17.29000  -3.12800   9.92600   0.700   15                                
   16  15.35800  -5.77100  20.11500   0.700   16                                
   17  14.52000  -6.24400  18.25000   0.700   17                                
   18  18.48400  -2.98500  10.17400   0.700   18                                
   19  16.64900  -2.55400   9.06600   0.700   19                                
   20  19.37900  -6.49300  15.06600   0.700   20