cluster     1   number of spheres in cluster    20
    1  21.53800  27.99400  18.02900   0.700    1                                
    2  21.31100  28.89800  19.15500   0.700    2                                
    3  20.44600  27.55000  17.19900   0.700    3                                
    4  18.29800  24.84800  20.50000   0.700    4                                
    5  18.25500  26.22100  20.88600   0.700    5                                
    6  20.02000  29.47000  19.37900   0.700    6                                
    7  19.15900  28.13500  17.38700   0.700    7                                
    8  17.40900  24.37400  19.48400   0.700    8                                
    9  17.29200  27.10300  20.29400   0.700    9                                
   10  15.60700  24.67100  17.71400   0.700   10                                
   11  17.56100  29.84700  18.63000   0.700   11                                
   12  18.95900  29.12800  18.44100   0.700   12                                
   13  16.48000  25.23600  18.80900   0.700   13                                
   14  16.43600  26.59600  19.23200   0.700   14                                
   15  15.77000  24.82400  16.38200   0.700   15                                
   16  14.45900  28.78300  16.74900   0.700   16                                
   17  16.52400  27.46500  16.18700   0.700   17                                
   18  16.55100  29.59900  17.58000   0.700   18                                
   19  15.44800  27.41500  18.58700   0.700   19                                
   20  15.82800  28.27900  17.29100   0.700   20