cluster     1   number of spheres in cluster    16
    1  -2.02700   5.94500  13.23000   0.700    1                                
    2  -2.97400   6.71000  12.57200   0.700    2                                
    3  -2.41800   4.84600  14.01900   0.700    3                                
    4  -4.33900   6.42300  12.69000   0.700    4                                
    5  -3.77100   4.56000  14.12300   0.700    5                                
    6  -4.68000   5.35200  13.48600   0.700    6                                
    7  -4.22100   3.48000  14.88500   0.700    7                                
    8  -5.25600   1.68700  16.17000   0.700    8                                
    9  -5.61700  -0.98400  16.32400   0.700    9                                
   10  -3.36000   2.69800  15.55700   0.700   10                                
   11  -3.91800   1.69800  16.31100   0.700   11                                
   12  -5.66000   0.52800  18.26700   0.700   12                                
   13  -7.43300   0.67900  16.66500   0.700   13                                
   14  -5.84500   2.95500  15.17700   0.700   14                                
   15  -6.04000   0.43400  16.89600   0.700   15                                
   16  -6.37600   5.31600  13.42700   0.700   16