cluster     1   number of spheres in cluster    21
    1  -2.03400  34.05000   2.41200   0.700    1                                
    2  -1.72500  33.22800   6.18900   0.700    2                                
    3   2.20700  32.03000   4.45700   0.700    3                                
    4   0.38700  34.50900   4.57200   0.700    4                                
    5   2.97300  30.90600   5.11600   0.700    5                                
    6   1.19500  26.99900   4.83200   0.700    6                                
    7   0.41400  28.07000   4.10300   0.700    7                                
    8  -0.89900  35.29900   4.31100   0.700    8                                
    9  -1.31600  30.58300   4.25100   0.700    9                                
   10  -2.10200  31.67500   4.31000   0.700   10                                
   11   3.17400  28.45700   4.79400   0.700   11                                
   12   0.73300  31.96200   4.89800   0.700   12                                
   13  -0.05600  33.06600   4.26100   0.700   13                                
   14   2.36700  29.55300   4.78000   0.700   14                                
   15   2.66100  27.14000   4.53200   0.700   15                                
   16   0.91200  29.48000   4.47600   0.700   16                                
   17   0.12400  30.59700   4.51400   0.700   17                                
   18  -2.00100  34.28200   3.90000   0.700   18                                
   19  -1.53500  33.03900   4.66400   0.700   19                                
   20  -3.25700  34.79700   4.34500   0.700   20                                
   21   3.37500  26.21200   4.16200   0.700   21