Ratio of I_band/I₂₁ normalised to the sample mean (⟨I_band/I₂₁⟩) as a function of EW(Hα), for band = [F335M_PAH (blue), F770W (orange), F1000W (green), F1130W (red)]. The solid lines represent the median, while the dashed lines correspond to the 16th and 84th percentiles. The alternative x-axis on top shows the sSFR associated with each EW(Hα) value. The median trends show that I_3.3/I₂₁ does not show the same decrease with EW(Hα) as the ratios of the other PAH bands.