Comparison of the accuracy of the true-z distribution inferred using CZ (red), SC (orange), and SC+CZ (blue). Upper panel: ${\displaystyle \sum _i}|{\widehat{P}}_{\mathit{ij}}\prime -P_{ij\prime }^{\mathrm{true}}|$, the absolute difference between the true-z distribution measured from the mock, P_ij′^true and the one estimated, ${\widehat{P}}_{ij\prime }$. Lower panel: ${\displaystyle \sum _i}|{\widehat{P}}_{ij\prime }-P_{ij\prime }^{\mathrm{true}}|/{\sigma }_{P_{ij\prime }}$ the absolute difference normalized by the estimated error σ_Pij′. The line and color band represent the median and the 16 and 84 percentile among 100 mock runs. The results for five tomographic bins are shown.