Comparison between the location where the nonthermal electrons are injected within the magnetosphere of BA-type magnetic stars as calculated in this paper (R_CBO) and estimated in Paper I to reproduce the observed spectra of several BA-type magnetic stars well studied at the radio regime (R_sim). Different cases of exponents (q) of the radial density law of the equatorial thermal plasma have been used to calculate R_CBO (Eq. (6)). The gray line in each panel sets the condition R_CBO = R_sim.