cluster     1   number of spheres in cluster    20
    1  21.86300 -16.89300  16.95300   0.700    1                                
    2  20.99700 -15.92000  16.54700   0.700    2                                
    3  21.02500 -16.72200  19.20200   0.700    3                                
    4  19.00600 -13.53400  19.30600   0.700    4                                
    5  21.84000 -17.29900  18.26000   0.700    5                                
    6  20.23200 -15.24100  17.49900   0.700    6                                
    7  20.20000 -15.65100  18.81800   0.700    7                                
    8  18.50900 -13.72200  17.88900   0.700    8                                
    9  20.07100 -14.81100  21.11900   0.700    9                                
   10  18.12700 -15.85000  21.56200   0.700   10                                
   11  18.19300 -12.34700  17.35100   0.700   11                                
   12  19.36100 -14.93700  19.87200   0.700   12                                
   13  18.84800 -11.81200  16.33400   0.700   13                                
   14  19.28200 -15.30000  22.12700   0.700   14                                
   15  18.22100 -15.74700  20.23700   0.700   15                                
   16  21.14600 -14.29300  21.33900   0.700   16                                
   17  17.23400 -16.42100  22.16200   0.700   17                                
   18  17.28400 -11.69200  17.95200   0.700   18                                
   19  19.52600 -14.18600  17.00300   0.700   19                                
   20  22.64200 -18.26300  18.59400   0.700   20