cluster     1   number of spheres in cluster    20
    1  34.32700  -8.25300   4.81700   0.700    1                                
    2  31.27300  -4.34000  -0.45300   0.700    2                                
    3  30.24700  -3.64500  -1.06200   0.700    3                                
    4  31.50200  -4.21400   0.91600   0.700    4                                
    5  32.20600  -7.09000   4.03400   0.700    5                                
    6  34.10700  -5.72700   4.51400   0.700    6                                
    7  31.44700  -5.96400   3.70300   0.700    7                                
    8  33.37700  -4.58500   4.16300   0.700    8                                
    9  33.53600  -6.99200   4.42600   0.700    9                                
   10  32.05700  -4.71200   3.73100   0.700   10                                
   11  29.39600  -2.86200  -0.26500   0.700   11                                
   12  30.65900  -3.42000   1.69600   0.700   12                                
   13  29.57500  -2.74800   1.13300   0.700   13                                
   14  28.59700  -1.84300   1.82000   0.700   14                                
   15  27.53200  -1.29000  -0.12700   0.700   15                                
   16  28.57000  -1.59300   3.14700   0.700   16                                
   17  26.61400  -0.64400  -0.76900   0.700   17                                
   18  28.33900  -2.13800  -0.89600   0.700   18                                
   19  27.68500  -1.22500   1.22100   0.700   19                                
   20  31.11100  -3.29000   3.40400   0.700   20