cluster     1   number of spheres in cluster    21
    1  50.41000   7.76600  13.69900   0.700    1                                
    2  50.70900   8.85000  12.84000   0.700    2                                
    3  52.02200   6.37000  12.55300   0.700    3                                
    4  47.31800   4.62800  15.21900   0.700    4                                
    5  48.41500   5.51600  17.20400   0.700    5                                
    6  46.01100   5.06900  17.36700   0.700    6                                
    7  51.09800   6.51900  13.53500   0.700    7                                
    8  51.67800   8.66800  11.82300   0.700    8                                
    9  47.29100   5.06600  16.60600   0.700    9                                
   10  52.33700   7.40200  11.70400   0.700   10                                
   11  48.53400   4.69600  14.49600   0.700   11                                
   12  49.64900   5.58400  16.46400   0.700   12                                
   13  49.69800   5.17700  15.08600   0.700   13                                
   14  45.50400   3.66800  17.84700   0.700   14                                
   15  52.01700   9.70600  10.93000   0.700   15                                
   16  46.37500   2.82800  18.19600   0.700   16                                
   17  44.26100   3.50000  17.84600   0.700   17                                
   18  50.88000   5.38100  14.34000   0.700   18                                
   19  53.76700   7.09900  10.27100   0.700   19                                
   20  48.67100   3.98000  12.49600   0.700   20                                
   21  51.41800   6.21200  17.43500   0.700   21