Top: normalized profiles illustrating the results of the de- and reprojection of the simulated β-profile map. Black: mean of the initial data maps; red: mean of the resulting R–L deprojected and reprojected maps. These profiles correspond to the azimuthal averaged of the maps on the left and on the right of Fig. 2, respectively. Bottom: relative residuals computed as (f_Data (s) − f_Recons(s))∕f_Data(s), with the corresponding uncertainties obtained with error propagation.