cluster     1   number of spheres in cluster    21
    1   5.06500   3.19400  11.53200   0.700    1                                
    2   3.60800   1.47400  10.37700   0.700    2                                
    3   4.56400   1.03000  12.54600   0.700    3                                
    4   0.89200   5.86800  12.44100   0.700    4                                
    5  -4.06200   2.02600  15.99700   0.700    5                                
    6  -2.01100   2.22100  17.30900   0.700    6                                
    7  -4.72600   1.38100  17.05100   0.700    7                                
    8  -2.66100   1.60900  18.35200   0.700    8                                
    9   1.64700   2.28000  12.88700   0.700    9                                
   10  -2.71100   2.43200  16.13200   0.700   10                                
   11  -3.98700   1.18500  18.22100   0.700   11                                
   12   2.71900   2.84900  12.22600   0.700   12                                
   13   0.79600   3.34800  13.10400   0.700   13                                
   14  -0.79900   2.88600  14.81800   0.700   14                                
   15   3.96700   2.13900  11.69800   0.700   15                                
   16   2.54100   4.14900  11.98800   0.700   16                                
   17  -2.10000   3.04300  15.11200   0.700   17                                
   18  -0.41200   3.51900  13.70600   0.700   18                                
   19   1.30800   4.44600  12.54900   0.700   19                                
   20  -0.00600   2.22000  15.49200   0.700   20                                
   21  -4.73600   0.40400  19.65800   0.700   21