cluster     1   number of spheres in cluster    20
    1  15.56200 -10.98500  16.25400   0.700    1                                
    2  16.38500 -10.23900  15.41500   0.700    2                                
    3  15.65800  -9.18100  17.83900   0.700    3                                
    4  18.06800  -6.65000  16.51700   0.700    4                                
    5  15.22800 -10.42100  17.45000   0.700    5                                
    6  16.81700  -8.95500  15.76300   0.700    6                                
    7  16.46300  -8.43600  16.99000   0.700    7                                
    8  17.93100  -6.96800  15.04900   0.700    8                                
    9  15.68100  -6.11300  17.05100   0.700    9                                
   10  16.05100  -6.17500  19.35600   0.700   10                                
   11  19.18500  -6.63700  14.26400   0.700   11                                
   12  16.89800  -7.02400  17.34800   0.700   12                                
   13  19.71100  -7.65100  13.60700   0.700   13                                
   14  15.45200  -5.83500  18.26300   0.700   14                                
   15  17.06400  -6.84000  18.78300   0.700   15                                
   16  15.11300  -5.89700  16.01900   0.700   16                                
   17  15.90100  -5.97100  20.54400   0.700   17                                
   18  19.56200  -5.45700  14.20500   0.700   18                                
   19  17.56500  -8.33300  14.84000   0.700   19                                
   20  14.47300 -11.13100  18.29500   0.700   20