cluster     1   number of spheres in cluster    18
    1  -1.77400 -16.48600  15.90200   0.700    1                                
    2  -0.89600 -14.46700  14.91900   0.700    2                                
    3  -2.10300 -15.78500  17.06900   0.700    3                                
    4  -1.22400 -13.76800  16.07600   0.700    4                                
    5  -1.30600 -20.16200   9.76200   0.700    5                                
    6   0.17600 -19.78900   9.67200   0.700    6                                
    7  -1.94300 -19.78300  11.10200   0.700    7                                
    8   0.99500 -20.34900  10.84000   0.700    8                                
    9  -0.80700 -16.53900  13.58600   0.700    9                                
   10  -1.17100 -15.82600  14.83000   0.700   10                                
   11  -1.83300 -14.41200  17.14900   0.700   11                                
   12  -0.91100 -19.77300  12.23000   0.700   12                                
   13  -2.17100 -13.61000  18.37200   0.700   13                                
   14  -1.79200 -12.32600  18.44600   0.700   14                                
   15  -2.80700 -14.13400  19.32900   0.700   15                                
   16  -0.75300 -17.79300  13.55300   0.700   16                                
   17   0.16400 -20.69600  11.96000   0.700   17                                
   18  -0.41700 -18.43500  12.40200   0.700   18