cluster     1   number of spheres in cluster    15
    1  12.89700 -12.59400  20.74100   0.700    1                                
    2  13.53500 -10.52400  21.64200   0.700    2                                
    3  11.96800 -12.75200  21.77200   0.700    3                                
    4  12.62100 -10.64000  22.68100   0.700    4                                
    5  14.75200 -11.14700  19.57200   0.700    5                                
    6  13.70400 -11.47200  20.65300   0.700    6                                
    7  11.81600 -11.76700  22.76100   0.700    7                                
    8  14.06700 -10.44300  18.35000   0.700    8                                
    9  10.88100 -11.76800  23.97100   0.700    9                                
   10  14.99700 -10.89300  17.19800   0.700   10                                
   11  10.62400 -10.63200  24.63100   0.700   11                                
   12  10.16800 -12.85300  24.23900   0.700   12                                
   13  12.74500 -10.43000  18.26300   0.700   13                                
   14  16.25000 -10.96400  17.25100   0.700   14                                
   15  14.37700 -11.17700  16.15800   0.700   15