Comparison of the gas-phase abundance estimates from Fig. 18 for objects with all relevant emission features detected. The large symbols are MUSE sources from the UDF and small dots are objects from the literature collection described in Appendix C. The solid histograms show the subset of objects from this work and the dotted histograms include the sample from the literature. The gray region marks values of super-solar abundances (12 + log₁₀(O/H) > 8.69). Points are color-coded according to object redshift.