cluster     1   number of spheres in cluster    21
    1  28.33600  35.62900  12.96700   0.700    1                                
    2  27.71100  33.98500  11.17400   0.700    2                                
    3  29.40500  35.76000  10.69000   0.700    3                                
    4  31.40200  30.73300  12.72300   0.700    4                                
    5  36.44800  34.47900  16.07400   0.700    5                                
    6  34.49000  34.39200  17.36100   0.700    6                                
    7  37.11400  35.10400  17.10800   0.700    7                                
    8  35.17000  35.02300  18.40400   0.700    8                                
    9  31.03500  34.31700  12.86000   0.700    9                                
   10  35.14800  34.12900  16.20900   0.700   10                                
   11  36.47600  35.36300  18.24500   0.700   11                                
   12  29.87700  33.95300  12.19800   0.700   12                                
   13  31.71400  33.16400  13.11100   0.700   13                                
   14  33.33500  33.73100  14.74300   0.700   14                                
   15  28.87800  34.80700  11.77800   0.700   15                                
   16  29.84500  32.63000  12.04300   0.700   16                                
   17  34.57100  33.50600  15.18300   0.700   17                                
   18  32.91300  33.03900  13.68100   0.700   18                                
   19  31.01600  32.14800  12.63500   0.700   19                                
   20  32.60100  34.54600  15.33300   0.700   20                                
   21  37.35700  36.13300  19.53400   0.700   21