cluster     1   number of spheres in cluster    17
    1  -3.41200   7.53700  12.68100   0.700    1                                
    2  -3.99900   2.28800  15.21100   0.700    2                                
    3  -2.31600   5.48700  13.73600   0.700    3                                
    4  -3.73000   3.56800  14.62700   0.700    4                                
    5  -5.32600   2.20200  15.68600   0.700    5                                
    6  -4.88200   4.39000  14.65700   0.700    6                                
    7  -3.55400   6.06300  13.05300   0.700    7                                
    8  -2.41800   3.95100  13.99000   0.700    8                                
    9  -2.23500   3.27100  12.67700   0.700    9                                
   10  -5.28500  -0.58200  16.09300   0.700   10                                
   11  -6.09700   6.35000  13.48800   0.700   11                                
   12  -4.51400   6.83100  15.33000   0.700   12                                
   13  -7.31300   0.79200  16.65700   0.700   13                                
   14  -5.30500   1.05400  18.01300   0.700   14                                
   15  -6.17000   3.65200  15.47500   0.700   15                                
   16  -4.89500   6.01500  14.21400   0.700   16                                
   17  -5.88900   0.92100  16.71200   0.700   17