cluster     1   number of spheres in cluster    15
    1  18.25800   2.46200  22.15200   0.700    1                                
    2  20.15300   2.98100  20.74900   0.700    2                                
    3  16.96700   2.44600  22.53600   0.700    3                                
    4  15.93500   3.14500  21.65500   0.700    4                                
    5  17.84100   3.77600  20.15700   0.700    5                                
    6  20.45600   2.07300  19.56900   0.700    6                                
    7  21.87900   2.19400  18.99700   0.700    7                                
    8  20.16000   0.65100  19.96000   0.700    8                                
    9  16.48400   3.74300  20.55200   0.700    9                                
   10  18.71200   3.09800  21.05100   0.700   10                                
   11  22.23500   3.39800  18.71400   0.700   11                                
   12  14.74400   3.19700  21.90200   0.700   12                                
   13  18.19400   4.33400  19.14700   0.700   13                                
   14  22.56400   1.18900  18.89100   0.700   14                                
   15  16.37500   1.42000  24.24200   0.700   15