cluster     1   number of spheres in cluster    18
    1  13.11100   3.87200  35.84700   0.700    1                                
    2  12.33400   4.59700  33.71600   0.700    2                                
    3  11.80100   3.80200  36.31500   0.700    3                                
    4  11.01900   4.52600  34.16100   0.700    4                                
    5  18.47300   5.23700  31.67400   0.700    5                                
    6  17.09600   5.44900  31.60900   0.700    6                                
    7  18.22900   4.09600  33.78900   0.700    7                                
    8  13.43000   4.27000  34.53200   0.700    8                                
    9  10.75400   4.13100  35.46300   0.700    9                                
   10  19.04000   4.56400  32.75700   0.700   10                                
   11  16.27500   4.98600  32.63200   0.700   11                                
   12  16.86000   4.31500  33.70700   0.700   12                                
   13  15.83100   3.97000  34.55700   0.700   13                                
   14  14.92900   5.04700  32.82800   0.700   14                                
   15  14.68200   4.40900  34.05100   0.700   15                                
   16   9.57400   4.07500  35.85200   0.700   16                                
   17  20.38700   4.36800  32.79800   0.700   17                                
   18  16.12400   3.05200  36.12900   0.700   18