Pressure distributions of bump flow solutions on the 256    ×    128 zone mesh using the standard scheme, MS3I/SGS. Fifty equidistantly spaced contours are shown between the pressure minimum and maximum. From top to bottom: a) M_∞ = 0.5 case after only three multigrid F(1, 0) cycles, b) fully converged M_∞ = 0.5 case (after 54 F(1, 0) cycles that reduced the defect by 12 orders of magnitude), and c) fully converged M_∞ = 1.4 case.