Major axis distance distribution of the [N II]/Hα and [S II]/Hα lines for IC1553 at z = 1 and 1.8 kpc. In green, the normalised Σ_Hα MAD distribution, constructed by integrating the Hα flux within the ellipse fitted in Section 2 throughout the major axis. Both line distributions show a correspondence with the Σ_Hα distribution, decreasing and showing a greater difference between the two heights as the Σ_Hα increases. This tendency is consistent for all galaxies.