cluster     1   number of spheres in cluster    20
    1  -1.93700  15.76100  16.46700   0.700    1                                
    2  -1.42500  13.86300  17.82000   0.700    2                                
    3  -1.54100  16.61100  17.50400   0.700    3                                
    4  -1.02700  14.69900  18.86600   0.700    4                                
    5   1.39800  20.23800  22.09400   0.700    5                                
    6   2.75000  19.24700  20.36200   0.700    6                                
    7   2.44400  21.10800  22.41100   0.700    7                                
    8   3.79400  20.11900  20.67500   0.700    8                                
    9  -1.88700  14.37000  16.60500   0.700    9                                
   10  -1.07800  16.08600  18.72000   0.700   10                                
   11   1.54600  19.29400  21.07400   0.700   11                                
   12   3.64100  21.04700  21.69800   0.700   12                                
   13  -2.30100  13.50800  15.58200   0.700   13                                
   14   0.24000  17.86000  19.65100   0.700   14                                
   15  -2.00600  12.21300  15.66600   0.700   15                                
   16  -2.79900  13.98400  14.44900   0.700   16                                
   17  -0.67200  16.87600  19.74600   0.700   17                                
   18   0.53100  18.45300  20.81500   0.700   18                                
   19   0.77400  18.19900  18.58400   0.700   19                                
   20   4.95000  22.09900  22.05400   0.700   20