cluster     1   number of spheres in cluster    20
    1  15.82600 -10.92600  16.33500   0.700    1                                
    2  16.59100 -10.16900  15.47800   0.700    2                                
    3  15.96600  -9.22300  17.98800   0.700    3                                
    4  18.44800  -6.67400  16.67500   0.700    4                                
    5  15.53000 -10.44800  17.55700   0.700    5                                
    6  17.13300  -8.95700  15.86700   0.700    6                                
    7  16.73400  -8.47500  17.11100   0.700    7                                
    8  18.18300  -6.86900  15.18000   0.700    8                                
    9  16.01000  -6.19600  17.32800   0.700    9                                
   10  16.43800  -6.32500  19.51100   0.700   10                                
   11  19.44600  -6.55200  14.37100   0.700   11                                
   12  17.26200  -7.09300  17.50800   0.700   12                                
   13  19.96200  -7.57200  13.64100   0.700   13                                
   14  15.60500  -5.76500  18.56300   0.700   14                                
   15  17.43500  -7.05000  18.95200   0.700   15                                
   16  15.49300  -5.92900  16.25900   0.700   16                                
   17  16.30400  -6.04600  20.69600   0.700   17                                
   18  19.92300  -5.40100  14.39800   0.700   18                                
   19  17.82200  -8.21500  14.95000   0.700   19                                
   20  14.77500 -11.22000  18.37600   0.700   20