cluster     1   number of spheres in cluster     6
    1  15.15700  28.50400  17.94100   0.700    1                                
    2  16.60000  28.31200  17.49300   0.700    2                                
    3  15.03900  28.11900  19.17400   0.700    3                                
    4  17.49500  28.24400  18.38800   0.700    4                                
    5  14.31000  28.73700  17.04300   0.700    5                                
    6  16.86900  28.03400  16.37900   0.700    6