cluster     1   number of spheres in cluster    16
    1  -1.30000   9.78700  12.84600   0.700    1                                
    2  -3.44100   3.45600  14.69500   0.700    2                                
    3  -5.58100   4.48900  14.67400   0.700    3                                
    4  -3.92100   2.37800  15.44300   0.700    4                                
    5  -6.12500   3.43400  15.41800   0.700    5                                
    6  -3.71900   5.62700  13.43300   0.700    6                                
    7  -2.76800   6.56600  14.20600   0.700    7                                
    8  -4.25000   4.53200  14.31500   0.700    8                                
    9  -5.26000   2.37700  15.80700   0.700    9                                
   10  -1.59500   8.68900  13.82100   0.700   10                                
   11  -5.47400  -0.34600  16.11500   0.700   11                                
   12  -2.36700   7.69700  13.37400   0.700   12                                
   13  -1.13700   8.67900  14.97700   0.700   13                                
   14  -7.38300   1.11500  16.65400   0.700   14                                
   15  -5.36400   1.20500  18.12000   0.700   15                                
   16  -5.93500   1.03100  16.77400   0.700   16