cluster     1   number of spheres in cluster    18
    1  -1.57300 -16.37600  16.02400   0.700    1                                
    2  -0.71800 -14.39600  14.92600   0.700    2                                
    3  -1.94200 -15.61700  17.13700   0.700    3                                
    4  -1.08600 -13.64300  16.03500   0.700    4                                
    5   0.09300 -19.14800  12.25400   0.700    5                                
    6   2.22700 -18.57000  13.25200   0.700    6                                
    7   0.74400 -20.03100  11.38600   0.700    7                                
    8   2.87300 -19.45100  12.39000   0.700    8                                
    9  -0.55300 -16.59000  13.77100   0.700    9                                
   10  -0.97100 -15.77100  14.92500   0.700   10                                
   11  -1.70200 -14.24100  17.13800   0.700   11                                
   12   0.84000 -18.42400  13.18800   0.700   12                                
   13   2.13200 -20.17300  11.45400   0.700   13                                
   14  -2.09400 -13.40800  18.32300   0.700   14                                
   15  -1.75700 -12.11200  18.37400   0.700   15                                
   16  -2.71900 -13.93600  19.28700   0.700   16                                
   17   0.25300 -17.52000  14.08600   0.700   17                                
   18   3.02700 -21.35900  10.27200   0.700   18