cluster     1   number of spheres in cluster     8
    1  15.23700   5.78100  15.22400   0.700    1                                
    2  16.03400   5.36200  14.16200   0.700    2                                
    3  14.88300   4.81900  16.19300   0.700    3                                
    4  16.48300   4.03800  14.03100   0.700    4                                
    5  15.36400   3.53500  15.99600   0.700    5                                
    6  16.14300   3.13400  14.95200   0.700    6                                
    7  16.59400   1.70900  14.86200   0.700    7                                
    8  15.01900   2.19500  17.11300   0.700    8