cluster     1   number of spheres in cluster    20
    1  15.84900 -11.11100  16.31600   0.700    1                                
    2  16.58900 -10.33300  15.45300   0.700    2                                
    3  15.86200  -9.28300  17.87500   0.700    3                                
    4  18.22500  -6.59500  16.50200   0.700    4                                
    5  15.51000 -10.55500  17.50900   0.700    5                                
    6  16.99500  -9.05100  15.79200   0.700    6                                
    7  16.60800  -8.49300  17.01100   0.700    7                                
    8  18.06200  -7.01300  15.06200   0.700    8                                
    9  15.75300  -6.25600  17.14700   0.700    9                                
   10  16.12200  -6.28100  19.31300   0.700   10                                
   11  19.26700  -6.67900  14.18600   0.700   11                                
   12  17.04300  -7.07100  17.33800   0.700   12                                
   13  19.74000  -7.67000  13.38400   0.700   13                                
   14  15.28400  -5.80400  18.33100   0.700   14                                
   15  17.19500  -6.96400  18.80200   0.700   15                                
   16  15.23500  -6.04500  16.07300   0.700   16                                
   17  16.03800  -6.04600  20.52800   0.700   17                                
   18  19.74100  -5.54200  14.22100   0.700   18                                
   19  17.69300  -8.35300  14.87400   0.700   19                                
   20  14.77600 -11.28600  18.39400   0.700   20