cluster     1   number of spheres in cluster    18
    1  67.69200  47.19500   8.96000   0.700    1                                
    2  68.62100  48.19100   9.19600   0.700    2                                
    3  66.78200  47.33500   7.93400   0.700    3                                
    4  73.23200  48.18700   7.30600   0.700    4                                
    5  72.38800  49.20500   7.71400   0.700    5                                
    6  73.67200  46.55700   5.35900   0.700    6                                
    7  73.00200  46.39000   4.14500   0.700    7                                
    8  71.11800  49.03200   5.67300   0.700    8                                
    9  70.43600  50.75200   7.37200   0.700    9                                
   10  69.64300  50.42900   8.62300   0.700   10                                
   11  73.02200  47.58800   6.07000   0.700   11                                
   12  71.32700  49.62500   6.91500   0.700   12                                
   13  68.63600  49.33100   8.40000   0.700   13                                
   14  66.81500  48.46700   7.12600   0.700   14                                
   15  71.96800  48.01300   5.25900   0.700   15                                
   16  65.95900  48.62400   6.14400   0.700   16                                
   17  71.98500  47.27500   4.09500   0.700   17                                
   18  67.72600  49.45300   7.38600   0.700   18