Some examples of the comparisons between the emission-line profiles generated from the models and observed in RM campaigns. The upper panels are the models, and the lower are the observed rms spectra extracted directly from the references marked in the lower left corners. The models, the parameters (μ_U, , and S_max), and the LOS azimuthal angles are marked in the lower left and upper right corners in the upper panels. The names of the objects are provided in the lower panels.