Matrix of correlation coefficients corresponding to an analytical Gaussian covariance, Z (Sect. 2.5), estimated for a (scale-cut; see Sect. 4) stage III 6 × 2 pt data-vector employed in this work. Axis labels denote sections of the covariance corresponding to cosmic shear (γγ), photometric auto-clustering (n^Pn^P), photometric GGL (n^Pγ), spectroscopic-photometric cross-galaxy-galaxy lensing (n^Sγ), spectroscopic-photometric cross-clustering (n^Sn^P), and spectroscopic auto-clustering (n^Sn^S) correlations. The sample statistics used for data-vector covariance estimations are those given in Table 1.