cluster     1   number of spheres in cluster    20
    1  21.78800 -16.85000  16.77600   0.700    1                                
    2  20.90900 -15.83000  16.41200   0.700    2                                
    3  20.97900 -16.66300  19.08900   0.700    3                                
    4  18.93200 -13.47700  19.23000   0.700    4                                
    5  21.78500 -17.25500  18.12300   0.700    5                                
    6  20.13600 -15.19300  17.39800   0.700    6                                
    7  20.14900 -15.59900  18.70400   0.700    7                                
    8  18.42900 -13.55100  17.78700   0.700    8                                
    9  19.98900 -14.73000  21.07600   0.700    9                                
   10  18.04200 -15.82500  21.44500   0.700   10                                
   11  18.05800 -12.17300  17.28500   0.700   11                                
   12  19.27400 -14.86900  19.72800   0.700   12                                
   13  18.74300 -11.71500  16.24100   0.700   13                                
   14  19.20300 -15.28700  22.00800   0.700   14                                
   15  18.12500 -15.65800  20.11000   0.700   15                                
   16  21.07100 -14.17100  21.25200   0.700   16                                
   17  17.13500 -16.34900  22.06600   0.700   17                                
   18  17.17900 -11.54000  17.88000   0.700   18                                
   19  19.39600 -14.11900  16.91900   0.700   19                                
   20  22.59400 -18.24500  18.48100   0.700   20