Angle-resolved spectra for a typical XRP source with luminosity L = 0.6L^*. The solid black line corresponds to the angle-averaged spectrum in the range (0, π/2). The dashed colored lines show spectra extracted in five angular bins within this range. Each spectrum has been normalized to its angular flux contribution. The vertical gray line marks the local cyclotron energy. With increasing cos θ, the CRSF centroid energy shifts to lower values and the blue wing becomes more pronounced.