cluster     1   number of spheres in cluster    20
    1  15.69100 -11.00900  16.29300   0.700    1                                
    2  16.47900 -10.26800  15.43700   0.700    2                                
    3  15.81600  -9.22200  17.87800   0.700    3                                
    4  18.23700  -6.62200  16.51900   0.700    4                                
    5  15.38900 -10.45900  17.49500   0.700    5                                
    6  16.97700  -9.02000  15.78500   0.700    6                                
    7  16.61600  -8.47800  17.02800   0.700    7                                
    8  18.05100  -6.99500  15.05900   0.700    8                                
    9  15.79500  -6.15000  17.13400   0.700    9                                
   10  16.20000  -6.13900  19.34100   0.700   10                                
   11  19.28400  -6.65100  14.22600   0.700   11                                
   12  17.02400  -7.06300  17.35700   0.700   12                                
   13  19.87200  -7.67000  13.56000   0.700   13                                
   14  15.36500  -5.68800  18.32900   0.700   14                                
   15  17.23000  -6.82900  18.78700   0.700   15                                
   16  15.29100  -5.94600  16.05100   0.700   16                                
   17  16.03600  -5.94000  20.53500   0.700   17                                
   18  19.72600  -5.49500  14.21400   0.700   18                                
   19  17.79500  -8.38900  14.89400   0.700   19                                
   20  14.60300 -11.16400  18.35400   0.700   20