The noise covariance between radial bins as a function of the minimum ℓ used for the integration in Eq. (15). This shows how different multipoles contribute to the radial covariance. θ_i, θ_j refer to the radial bins used to compute the covariance. The figure shows both the diagonal and off-diagonal terms in the covariance. In the following, we consider the covariance between radial bins of width 1 arcminute. Top: Elements of the covariance matrix between radial bins for the magnification field. Bottom: Elements of the covariance matrix between radial bins for the shear field.