cluster     1   number of spheres in cluster    20
    1   6.79400  15.57500  18.49600   0.700    1                                
    2  13.19000  17.83000  20.40800   0.700    2                                
    3  11.03000  14.07700  19.01800   0.700    3                                
    4  11.51400  14.87800  23.33900   0.700    4                                
    5   8.00600  16.29700  19.08200   0.700    5                                
    6   7.87600  17.84300  19.15200   0.700    6                                
    7   8.36000  18.41800  20.49800   0.700    7                                
    8   9.68500  17.74600  20.81400   0.700    8                                
    9  10.30500  17.93100  22.19000   0.700    9                                
   10  11.28900  13.54100  21.66900   0.700   10                                
   11  11.12800  12.49300  20.80600   0.700   11                                
   12  11.31700  14.84400  21.15800   0.700   12                                
   13  12.91000  17.74800  21.90800   0.700   13                                
   14  11.60600  17.13400  22.40800   0.700   14                                
   15  11.09200  11.19900  21.20300   0.700   15                                
   16  10.99900  12.80500  19.47300   0.700   16                                
   17  11.18900  15.14200  19.83200   0.700   17                                
   18  11.42900  13.57800  22.98200   0.700   18                                
   19  11.49200  15.66600  22.23500   0.700   19                                
   20  13.96100  17.31900  22.73400   0.700   20