Relative difference between the square root of the diagonals in the Egretta (realistic mask and depth variations) and Buceros (rectangular mask, uniform depth) covariances of the weak lensing correlation functions, with all shape noise contributions removed (σ_ϵ = 0). Red (blue) symbols show results for the mock (analytic) covariance. Bands around the mock data points indicate the standard error determined from a jackknife estimate of variance. Top two rows: GGL signals, centre three rows: ξ₊, and bottom three rows: ξ₋, with bin combinations indicated in the panels.