From top left to bottom right we show the observed Hβ, [O II], [O III] and [N II] LFs and their different ELG components in the low-z (top panels) and high-z (middle panels) bins, together with their Saunders fits. The bottom panels in each figure displays the ratios between the high- and low-z LF fits. The shaded cyan regions indicate where the incompleteness starts to dominate and our LF results cannot be trusted. The completeness limit value for each line is provided in Table A.1. For those lines for which the shade is not visible, the completeness limit is at lower L, outside the figure range.