cluster     1   number of spheres in cluster    21
    1   1.21200  67.43100  68.27100   0.700    1                                
    2   5.82400  61.78500  63.30600   0.700    2                                
    3   3.07600  63.84700  65.82100   0.700    3                                
    4   3.82700  63.10500  64.91200   0.700    4                                
    5   3.80900  68.42400  65.59900   0.700    5                                
    6   2.45300  68.43100  66.33700   0.700    6                                
    7   2.22900  65.96500  66.81000   0.700    7                                
    8   5.36900  68.45900  62.73400   0.700    8                                
    9   2.79900  68.17200  62.19800   0.700    9                                
   10   2.65000  67.66100  63.43200   0.700   10                                
   11   3.02900  65.28800  65.78000   0.700   11                                
   12   4.58900  63.76600  63.91100   0.700   12                                
   13   3.75200  65.92400  64.78500   0.700   13                                
   14   4.51900  65.18500  63.87600   0.700   14                                
   15   4.19300  68.40800  61.58500   0.700   15                                
   16   5.15300  67.22700  63.66400   0.700   16                                
   17   3.84600  67.35100  64.43000   0.700   17                                
   18   1.99400  67.22000  67.06700   0.700   18                                
   19   4.31800  67.24900  60.69000   0.700   19                                
   20   5.19000  65.99100  62.95800   0.700   20                                
   21   5.48700  63.13300  63.00600   0.700   21