cluster     1   number of spheres in cluster    21
    1   9.23900  36.51600 -74.77400   0.700    1                                
    2   7.14900  37.06600 -75.89600   0.700    2                                
    3  16.24600  37.67400 -83.83200   0.700    3                                
    4  16.47200  38.51400 -85.07800   0.700    4                                
    5  13.07300  38.53500 -80.53800   0.700    5                                
    6  11.97600  36.62700 -79.70700   0.700    6                                
    7  14.32000  39.23900 -83.72200   0.700    7                                
    8  11.85500  38.75800 -78.32800   0.700    8                                
    9   9.45100  37.23600 -75.97000   0.700    9                                
   10  11.86300  38.14700 -79.73500   0.700   10                                
   11  13.06000  37.48900 -81.64500   0.700   11                                
   12  10.69500  37.61500 -76.49200   0.700   12                                
   13  14.42300  37.16600 -82.28400   0.700   13                                
   14   8.23400  37.52600 -76.57100   0.700   14                                
   15  12.68500  36.26500 -80.92400   0.700   15                                
   16  10.65000  38.30700 -77.66100   0.700   16                                
   17  14.94800  38.00400 -83.23100   0.700   17                                
   18  11.74800  37.32200 -75.91400   0.700   18                                
   19  14.98100  36.13900 -81.89700   0.700   19                                
   20   7.60000  36.25400 -74.48400   0.700   20                                
   21  15.42100  39.94700 -84.94400   0.700   21