cluster     1   number of spheres in cluster    21
    1  -1.67400  -0.79300  23.81100   0.700    1                                
    2   3.46100  -6.61900  23.20900   0.700    2                                
    3   4.64700  -5.89000  23.20100   0.700    3                                
    4   2.25700  -6.06300  22.79600   0.700    4                                
    5   4.64800  -4.58400  22.76600   0.700    5                                
    6  -0.34000  -3.58500  19.95700   0.700    6                                
    7  -2.42200  -1.12000  21.44300   0.700    7                                
    8   0.79800  -2.82800  24.05400   0.700    8                                
    9   1.47700  -5.24100  19.77600   0.700    9                                
   10   2.25600  -4.74000  22.37800   0.700   10                                
   11   3.46300  -4.02000  22.34800   0.700   11                                
   12   0.72600  -4.26800  20.53100   0.700   12                                
   13  -1.05400  -2.64500  20.70500   0.700   13                                
   14   0.38000  -3.08600  22.62700   0.700   14                                
   15   1.07000  -4.02400  21.87300   0.700   15                                
   16  -0.69400  -2.38700  22.05200   0.700   16                                
   17   1.65300  -1.63400  24.05500   0.700   17                                
   18   2.08800  -6.01800  19.20400   0.700   18                                
   19  -2.11400  -1.84400  20.40600   0.700   19                                
   20  -1.59600  -1.41300  22.48700   0.700   20                                
   21   3.48200  -2.36800  21.81100   0.700   21