Radial pressure profiles: orange and blue dotted profiles are the 3D profiles made, respectively, with the high- and low-resolution simulations, and the error bars are the standard deviation. With the same colour code, the solid lines are the 3D-deprojected profiles extracted from the Fil projection. The pale lines are the 100 iterations of the Monte-Carlo smoothing method, and the error bars are the dispersion among these iterations in each bin. The vertical solid line is R₅₀₀, the vertical dashed line is R_vir. 3D-deprojected profiles are less smooth than their 3D counterparts. The computation of the hydrostatic mass requires the gradients of these quantities, the observed irregularities have a significant impact on the mass estimates.