cluster     1   number of spheres in cluster    20
    1  -6.22900  10.28600  -5.03900   0.700    1                                
    2  -6.01400   8.62600  -3.05800   0.700    2                                
    3  -1.47000   4.87000  -6.50400   0.700    3                                
    4  -2.72400   5.41900  -6.19700   0.700    4                                
    5  -1.15000   4.65100  -7.83700   0.700    5                                
    6  -3.36100   5.55900  -8.52200   0.700    6                                
    7  -8.91900   6.40200  -6.26500   0.700    7                                
    8  -3.68700   5.73000  -7.17000   0.700    8                                
    9  -2.08800   4.99400  -8.81900   0.700    9                                
   10  -6.24000   6.12500  -6.66800   0.700   10                                
   11  -4.83900   6.32400  -6.63300   0.700   11                                
   12  -7.15400   5.24800  -7.26500   0.700   12                                
   13  -6.76700   7.14700  -5.84500   0.700   13                                
   14  -5.59600   9.00200  -4.48700   0.700   14                                
   15  -6.74000   4.25100  -8.04600   0.700   15                                
   16  -8.47300   5.42000  -7.03900   0.700   16                                
   17  -8.09300   7.27000  -5.66600   0.700   17                                
   18  -4.66300   7.36500  -5.83900   0.700   18                                
   19  -5.71600   7.83500  -5.40000   0.700   19                                
   20  -1.66200   4.74300 -10.07900   0.700   20