Examples of our fitting procedure in individual spaxels (for MaNGA plate-IFU: 9090-3704). The central image is the W₈₀ map for this target. The black line shows the original spectra, and the yellow line is our final fit. The blue and green lines are the Gaussian sub-components of the fit (they have been offset on the y-axis). If a panel has only one (blue) component (e.g., panel b or c), the single-Gaussian fit is best to model the spectrum.