The Prenucleolus (Prescision=7 places): 

x1 = 300.00000000 
x2 = 300.00000000 
x3 = 300.00000000 
x4 = 300.00000000 

Excesses:

0.00000000 ( )
0.00000000 ( 2 4 )
0.00000000 ( 1 3 )
0.00000000 ( 1 2 3 4 )
-300.00000000 ( 2 )
-300.00000000 ( 4 )
-300.00000000 ( 2 3 4 )
-300.00000000 ( 1 )
-300.00000000 ( 3 )
-300.00000000 ( 1 3 4 )
-300.00000000 ( 1 2 )
-300.00000000 ( 1 2 4 )
-300.00000000 ( 1 2 3 )
-600.00000000 ( 1 4 )
-600.00000000 ( 2 3 )
-600.00000000 ( 3 4 )

Vector v:

0.00000000 ( )
0.00000000 ( 4 )
0.00000000 ( 3 )
0.00000000 ( 3 4 )
0.00000000 ( 2 )
600.00000000 ( 2 4 )
0.00000000 ( 2 3 )
600.00000000 ( 2 3 4 )
0.00000000 ( 1 )
0.00000000 ( 1 4 )
600.00000000 ( 1 3 )
600.00000000 ( 1 3 4 )
300.00000000 ( 1 2 )
600.00000000 ( 1 2 4 )
600.00000000 ( 1 2 3 )
1200.00000000 ( 1 2 3 4 )