cluster     1   number of spheres in cluster    20
    1  -3.16000   5.87900  14.17900   0.700    1                                
    2  -2.51900   7.04200  13.54400   0.700    2                                
    3  -4.47400   5.50700  13.55800   0.700    3                                
    4  -1.28800   7.51100  14.26100   0.700    4                                
    5  -5.10700   4.27900  14.15200   0.700    5                                
    6  -0.71400   8.79000  13.71400   0.700    6                                
    7  -4.31500   3.02700  13.91300   0.700    7                                
    8  -1.61600   9.97200  13.89600   0.700    8                                
    9  -4.94600   1.80500  14.46000   0.700    9                                
   10  -1.27300  11.10700  13.02800   0.700   10                                
   11  -5.31800  -0.54600  16.08500   0.700   11                                
   12  -2.07400  12.54300  10.55500   0.700   12                                
   13  -7.13700   1.04700  16.44200   0.700   13                                
   14  -5.28900   0.89900  18.04600   0.700   14                                
   15  -1.44500  14.04500  12.38700   0.700   15                                
   16  -3.82100  13.59800  11.90700   0.700   16                                
   17  -4.99900   1.95100  15.91300   0.700   17                                
   18  -2.45500  11.95500  12.99300   0.700   18                                
   19  -5.76200   0.83800  16.70800   0.700   19                                
   20  -2.47000  13.14700  11.96900   0.700   20