cluster     1   number of spheres in cluster    15
    1  -2.09400   5.44000  12.85000   0.700    1                                
    2  -3.70700   2.26000  15.41200   0.700    2                                
    3  -3.16600   3.25100  14.63000   0.700    3                                
    4  -5.90800   3.30800  15.15600   0.700    4                                
    5  -5.06300   2.30600  15.67900   0.700    5                                
    6  -3.97900   4.26900  14.08200   0.700    6                                
    7  -5.35300   4.30500  14.35500   0.700    7                                
    8  -6.06500   5.43700  13.70000   0.700    8                                
    9  -5.29600  -0.50400  15.92400   0.700    9                                
   10  -3.49400   5.31300  13.25100   0.700   10                                
   11  -7.23800   5.75900  13.73500   0.700   11                                
   12  -7.14100   1.16400  16.71700   0.700   12                                
   13  -5.14800   1.06400  18.01300   0.700   13                                
   14  -4.81000   6.28400  12.84200   0.700   14                                
   15  -5.70200   1.00700  16.68100   0.700   15