S₈ constraints (1σ) for different compositions of the GGL data vector in the joint analysis (blue), probe combinations (red), different covariance models (green), and different prior assumptions (orange). Standard marginal (M-)HPD credible intervals are shown as dot-dashed lines; PJ-HPD intervals as solid lines. The grey dashed line indicates the input value of S₈. The corresponding interval widths, as well as explanations of the case labels, are given in Table 5. The M-HPD intervals are generally shifted to S₈ values lower than the input; see text and Sect. 6.4 for a discussion.