Fractional alignment ﹩{\sigma }_{0}^{2}({\alpha }_{\ell }{J}_{\ell })﹩ of the first ﹩{}^{2}{P}_{3/2}^{0}﹩ J₁-level of the Fe X ground term (left panel) and of the second ﹩{}^{3}{P}_{1}^{e}﹩ J₂-level of the Fe XIII ground term (right panel) as a function of the radial distance R/R_Sun in the spherically symmetric 1D quiet-Sun coronal model of Figure 1. Solid lines: ﹩{\sigma }_{0}^{2}({\alpha }_{\ell }{J}_{\ell })﹩ values calculated taking into account electron collisions. Dashed lines: ﹩{\sigma }_{0}^{2}({\alpha }_{\ell }{J}_{\ell })﹩ values obtained in the absence of collisions. Red circles: anisotropy of the continuum radiation at 6376 Å (for Fe X) and at 10747 Å (for Fe XIII). The results shown are for the case of a vertical magnetic field (θ_B = 0°).