Numerical correlation matrices of the angular two-point correlation function derived from 1000 PLCs (see colour-bar on the right). Left: results for real space (upper triangle) and redshift space, with σ_z = 0 (lower triangle). Right: results in photo-z space, where RSDs are included, for photo-z errors given by σ_z = 0.02(1 + z) (upper triangle) and σ_z = 0.05(1 + z) (lower triangle). In each panel the horizontal and vertical white solid lines separate the cross-correlation sub-matrices measured between different redshift bins.