cluster     1   number of spheres in cluster    18
    1  -1.54600  30.79800   8.41300   0.700    1                                
    2   4.70300  24.94600   5.81300   0.700    2                                
    3   5.09800  26.79100   4.31800   0.700    3                                
    4   4.76500  24.09200   4.69300   0.700    4                                
    5   5.15300  25.86100   3.26100   0.700    5                                
    6   1.06600  27.06000   8.68600   0.700    6                                
    7   0.14800  28.10800   8.71200   0.700    7                                
    8   0.64200  31.29900   7.04000   0.700    8                                
    9   4.81300  27.27600   6.78500   0.700    9                                
   10  -0.22800  30.48300   7.84100   0.700   10                                
   11   4.87400  26.32700   5.61500   0.700   11                                
   12   2.60200  28.20100   7.34100   0.700   12                                
   13   1.68900  29.36600   7.29900   0.700   13                                
   14   4.99200  24.53300   3.43000   0.700   14                                
   15   2.26700  27.07600   8.02800   0.700   15                                
   16   1.79200  30.58600   6.66200   0.700   16                                
   17   3.79000  28.30300   6.64500   0.700   17                                
   18   0.45000  29.26500   8.01100   0.700   18