cluster     1   number of spheres in cluster     4
    1   5.84400  62.42800  62.21400   0.700    1                                
    2   4.17800  63.93800  60.67900   0.700    2                                
    3   5.36200  65.01400  62.45900   0.700    3                                
    4   5.48200  63.99400  61.43500   0.700    4