cluster     1   number of spheres in cluster    21
    1   3.50400  31.59800   0.05100   0.700    1                                
    2   5.09200  33.20600   1.13000   0.700    2                                
    3   4.77500  33.22700  -1.32900   0.700    3                                
    4   6.81400  30.73700  -2.65800   0.700    4                                
    5   9.17600  27.98200  -0.19200   0.700    5                                
    6   6.70500  30.62800  -1.16200   0.700    6                                
    7   5.94600  31.24700  -0.19100   0.700    7                                
    8   7.50800  29.70900  -0.40800   0.700    8                                
    9   8.09600  31.42500  -3.16100   0.700    9                                
   10   8.35200  31.15600  -4.69000   0.700   10                                
   11   4.85700  32.32300  -0.09800   0.700   11                                
   12   8.01500  32.94300  -2.97700   0.700   12                                
   13   7.28700  29.74500   0.88100   0.700   13                                
   14   8.44000  32.18500  -5.44900   0.700   14                                
   15  11.60200  27.54600   0.67400   0.700   15                                
   16  11.39000  28.35600  -1.65500   0.700   16                                
   17   8.45800  29.96200  -5.06000   0.700   17                                
   18  10.95700  29.96900   0.27400   0.700   18                                
   19   6.28400  30.73200   1.02600   0.700   19                                
   20   8.39200  28.90400  -1.01200   0.700   20                                
   21  10.88600  28.55200  -0.18400   0.700   21