Comparison of the definition of the continuum for FADO and MPA-JHU for the Hα line. The red line is the observed spectrum, and the green line is the fitted model. The dashed orange line represents the continuum as defined from averaging the level of the continuum adjacent to the emission line (MPA-JHU definition). The dashed blue line represents the continuum considering the bottom of the absorption feature below the emission line (FADO definition).