--- impurity 0 with degeneracy 4 ---
  Tr(Sigma*G)/2= 78.1958553689
  <s_oo>= 26.2793068594
  sum_i Sigma_oo(i)*n(i)/2= 81.666919022
  <Sigma_oo>*n/2= 81.7923391777
:EORB   -1.05734683023