cluster     1   number of spheres in cluster    21
    1  72.06400  48.66700   9.17500   0.700    1                                
    2  73.08200  45.25500   4.71200   0.700    2                                
    3  67.29700  44.60600   8.85800   0.700    3                                
    4  70.74500  48.92400   9.48200   0.700    4                                
    5  72.39200  48.00500   8.01200   0.700    5                                
    6  72.79800  45.94200   5.87100   0.700    6                                
    7  67.66000  45.93200   8.91500   0.700    7                                
    8  72.29900  45.46600   3.59700   0.700    8                                
    9  66.31600  44.20900   7.97300   0.700    9                                
   10  70.07000  47.87500   7.44300   0.700   10                                
   11  71.01600  46.99400   4.70900   0.700   11                                
   12  68.29300  48.84300   8.96800   0.700   12                                
   13  69.73300  48.54100   8.61800   0.700   13                                
   14  71.40000  47.60300   7.12500   0.700   14                                
   15  71.75300  46.85500   5.88500   0.700   15                                
   16  67.02500  46.84700   8.08500   0.700   16                                
   17  66.03200  46.35700   7.19200   0.700   17                                
   18  65.36900  47.20000   6.38000   0.700   18                                
   19  71.28400  46.33400   3.57200   0.700   19                                
   20  65.67900  45.05200   7.15100   0.700   20                                
   21  67.31400  48.21300   8.09700   0.700   21