cluster     1   number of spheres in cluster     9
    1  -1.17500  15.66200  19.00500   0.700    1                                
    2  -1.77400  16.34100  17.93200   0.700    2                                
    3  -0.91400  14.29500  18.88500   0.700    3                                
    4  -2.10700  15.65300  16.75800   0.700    4                                
    5  -1.25700  13.63400  17.70800   0.700    5                                
    6  -1.85300  14.31100  16.65800   0.700    6                                
    7  -2.19300  13.62700  15.49600   0.700    7                                
    8  -1.76200  12.39100  15.30900   0.700    8                                
    9  -2.79700  14.23500  14.49100   0.700    9