cluster     1   number of spheres in cluster    21
    1   3.03400  19.22900  20.26000   0.700    1                                
    2   1.59900  20.30200  21.91000   0.700    2                                
    3  -1.72900  13.24400  17.04600   0.700    3                                
    4  -1.78500  15.34000  15.80800   0.700    4                                
    5   1.99900  18.36400  19.93500   0.700    5                                
    6   0.56400  19.44600  21.58400   0.700    6                                
    7  -1.46700  13.92600  18.22000   0.700    7                                
    8  -1.50800  16.02100  16.98900   0.700    8                                
    9   2.81900  20.18300  21.25500   0.700    9                                
   10  -1.88500  13.94800  15.85200   0.700   10                                
   11   0.77400  18.49400  20.59400   0.700   11                                
   12  -1.35900  15.30700  18.17300   0.700   12                                
   13   3.92200  21.11300  21.62400   0.700   13                                
   14  -2.18500  13.18500  14.60900   0.700   14                                
   15   4.02400  21.58300  22.86900   0.700   15                                
   16  -1.81700  11.90800  14.52900   0.700   16                                
   17   4.75500  21.42600  20.73900   0.700   17                                
   18  -2.80600  13.74200  13.65700   0.700   18                                
   19  -0.26900  17.63200  20.30500   0.700   19                                
   20  -1.12400  15.95300  19.31400   0.700   20                                
   21  -0.10600  16.74400  19.46700   0.700   21