
Generalized Symmetric Eigenproblem, N=324 (18x18 grid)

 All requested eigenvalues computed up to the required tolerance:
     21.89996, 21.65898, 21.28794, 20.82229, 20.78225, 20.58269, 20.22226, 20.15581, 
     19.85209, 19.73108, 19.61220, 19.42602

Level of orthogonality below the tolerance
