cluster     1   number of spheres in cluster     6
    1   3.23600  -2.44400   8.32800   0.700    1                                
    2   4.45500  -0.09100   8.08500   0.700    2                                
    3   2.83300   1.08900   7.18500   0.700    3                                
    4   3.34300  -0.91200   7.93100   0.700    4                                
    5   2.33100  -0.13300   7.35600   0.700    5                                
    6   4.10500   1.14800   7.61200   0.700    6