cluster     1   number of spheres in cluster    18
    1  -1.90600  -3.31900  38.33100   0.700    1                                
    2   0.27100  -4.87900  39.19900   0.700    2                                
    3  -1.34000  -3.12000  39.58700   0.700    3                                
    4  -0.25100  -3.89400  40.01600   0.700    4                                
    5  -1.38400  -4.30000  37.51600   0.700    5                                
    6  -0.29700  -5.07300  37.95400   0.700    6                                
    7  -1.48500  -2.01100  41.73900   0.700    7                                
    8  -0.29900  -2.85800  42.21100   0.700    8                                
    9  -1.90700  -2.21400  40.46100   0.700    9                                
   10   0.22400  -3.73800  41.30900   0.700   10                                
   11  -1.74300  -4.23700  36.07700   0.700   11                                
   12   0.25600  -6.14300  37.13400   0.700   12                                
   13  -1.99800  -1.10600  42.38200   0.700   13                                
   14   0.22800  -2.62700  43.28300   0.700   14                                
   15  -2.53000  -3.36700  35.72900   0.700   15                                
   16  -1.38500  -5.15700  35.36600   0.700   16                                
   17  -0.26500  -7.24300  37.07700   0.700   17                                
   18   1.27400  -5.85200  36.54100   0.700   18