cluster     1   number of spheres in cluster    20
    1  -1.80300 -21.57600   9.30800   0.700    1                                
    2  -1.91400 -20.61900  10.31900   0.700    2                                
    3  -1.01100 -14.82900  14.98600   0.700    3                                
    4  -1.94500 -16.70500  16.19600   0.700    4                                
    5  -1.25500 -14.01200  16.09500   0.700    5                                
    6  -2.19000 -15.88800  17.30100   0.700    6                                
    7  -2.17400 -22.89500   9.57500   0.700    7                                
    8  -2.75000 -22.33500  11.78100   0.700    8                                
    9  -1.11300 -17.08000  13.87900   0.700    9                                
   10  -1.35900 -16.18300  15.03800   0.700   10                                
   11  -1.85000 -14.53400  17.25100   0.700   11                                
   12  -2.39300 -20.99600  11.57600   0.700   12                                
   13  -2.10600 -13.64400  18.44100   0.700   13                                
   14  -2.52500 -19.97900  12.68700   0.700   14                                
   15  -2.73100 -14.09400  19.53300   0.700   15                                
   16  -1.71500 -12.44800  18.42400   0.700   16                                
   17  -2.63600 -23.23900  10.78600   0.700   17                                
   18  -2.02000 -17.91200  13.57400   0.700   18                                
   19  -1.93300 -18.78100  12.57100   0.700   19                                
   20  -3.18100 -20.26500  13.68500   0.700   20