cluster     1   number of spheres in cluster    20
    1   3.82100  79.36700  28.23300   0.700    1                                
    2   4.94100  78.50800  28.30100   0.700    2                                
    3   2.53600  78.87900  28.09500   0.700    3                                
    4   4.75700  77.13100  28.22700   0.700    4                                
    5   0.97800  76.98700  27.86700   0.700    5                                
    6   0.73200  75.64800  27.78600   0.700    6                                
    7   1.77400  73.30900  27.77900   0.700    7                                
    8   5.38300  73.76700  28.22900   0.700    8                                
    9   2.31400  77.48100  28.01300   0.700    9                                
   10   1.80800  74.70900  27.85500   0.700   10                                
   11   3.44800  76.55300  28.08800   0.700   11                                
   12   3.04700  72.85600  27.87500   0.700   12                                
   13   3.17200  75.11900  28.00900   0.700   13                                
   14   6.12900  74.07200  26.94500   0.700   14                                
   15   3.35400  71.42000  27.78800   0.700   15                                
   16   3.91500  73.93200  28.04600   0.700   16                                
   17   7.46200  74.24600  26.99900   0.700   17                                
   18   3.01100  70.76500  26.65200   0.700   18                                
   19   5.54500  74.16500  25.88000   0.700   19                                
   20   3.90000  70.83700  28.71100   0.700   20