Relative difference between the square root of the diagonals of the mock and analytic covariances for the weak lensing band power signals. Top two rows: GGL signals; bottom three: cosmic shear signals, with bin combinations indicated in the panels. Three cases are shown: spatially uniform galaxy samples in a simple footprint (Buceros, green); spatially uniform galaxy samples in the realistic survey footprints (Cygnus, blue); and spatially varying depth in the realistic footprints (Egretta, red). GGL signals that are not used in the analysis have been greyed out.