  We consider a singularly perturbed convection-diffusion with exponential and
characteristic boundary layers. The problem is numerically solved by the FEM
and SDFEM method with bilinear elements on a graded mesh. For the FEM we prove
almost uniform convergence and superconvergence. The use of graded mesh allows
for the SDFEM to prove almost uniform esimates in the SD norm, which is not
possible for Shishkin type meshes.
