Fig. 4.
Hydrostatic gas fractions at R500, HSE (blue points) and R200, HSE (red points) obtained from our reference hydrostatic mass model as a function of cluster mass. The dashed magenta line and shaded area represent the universal gas fraction at R500 estimated in Sect. 3.1 and its uncertainty. The green shaded area indicates the cosmic baryon fraction (Planck Collaboration XIII 2016).
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