Relation between the ionizing photon production efficiency, log(ξ_ion), and the rest-frame EW of [O III], log(EW₀ [O III]). The blue points represent our sample of EELGs, with a typical error bar shown in the lower right region. The solid red line indicates the best-fit linear relation obtained in this work using a Markov chain Monte Carlo approach, with the shaded area showing the 1σ confidence interval. For comparison, previous relations from the literature are also shown: Tang et al. (2019), dashed), Pahl et al. (2025), dotted), Simmonds et al. (2024), dash-dotted), Llerena et al. (2024b), solid), and Begley et al. (2025), solid with dot.)