cluster     1   number of spheres in cluster     6
    1   6.00000 -28.15300  15.38000   0.700    1                                
    2   5.82600 -26.58800  15.60000   0.700    2                                
    3   8.15000 -24.56000  13.98600   0.700    3                                
    4   7.51500 -24.65800  15.42100   0.700    4                                
    5   8.39700 -23.20500  13.45800   0.700    5                                
    6   7.06000 -25.93400  15.83700   0.700    6