cluster     1   number of spheres in cluster    21
    1   4.39400  63.61900  64.13100   0.700    1                                
    2   4.93400  70.63000  69.27400   0.700    2                                
    3   3.91300  70.30300  68.46100   0.700    3                                
    4   6.67000  70.27700  67.43400   0.700    4                                
    5   5.51900  68.78400  62.99700   0.700    5                                
    6   3.17100  68.55500  62.21700   0.700    6                                
    7   4.28200  66.40500  62.99600   0.700    7                                
    8   2.30300  67.18000  64.15000   0.700    8                                
    9   3.27900  64.63600  64.46600   0.700    9                                
   10   6.37800  70.63500  68.84500   0.700   10                                
   11   4.24800  69.91200  67.04300   0.700   11                                
   12   5.56900  69.95000  66.66600   0.700   12                                
   13   4.97500  69.19800  64.47000   0.700   13                                
   14   3.62300  69.11000  64.75200   0.700   14                                
   15   3.22800  69.51200  66.14600   0.700   15                                
   16   4.52700  67.88000  62.24600   0.700   16                                
   17   2.62100  68.60200  63.70900   0.700   17                                
   18   3.30500  66.08900  63.84900   0.700   18                                
   19   1.88600  69.43000  66.46900   0.700   19                                
   20   5.96000  69.58100  65.30900   0.700   20                                
   21   7.56000  70.99600  69.95900   0.700   21