Spectrum from the bulge region with the fit by GANDALF. Top: flux-corrected spectrum (black), best fit by GANDALF (red), which is the sum of the model stellar and the emission line spectra. The green shaded areas are the regions where the emission lines are expected. A zoom into the region of the [O III] doublet is shown on the right. Middle: best fit emission lines with a zoom into the region of the [O III] doublet. Bottom: residuals (f_measured − f_fitted)/f_measured.