Left panel: typical hydrostatic, EG and MOND radial mass profiles (here for A2142; plots for the remaining 12 objects in Appendix B. Vertical lines indicate R₁₀₀₀ (dotted line), R₅₀₀ (dash-dotted line) and R₂₀₀ (dashed line). Right panel: medians (and 1st and 3rd quartiles) of the ratio between the hydrostatic mass and the value predicted from EG and MOND for the whole X-COP sample. Shaded regions indicate the < 10% (darkest) and < 30% differences.