DIG models for individual galaxies. The fit is shown in blue, and the vertical red lines represent the Hα flux threshold for C_H II < 0.4 (solid) and the flux threshold from Kaplan et al. (2016) (dashed). The vertical solid grey line shows log₁₀(f₀) and the horizontal dashed grey lines the median value of C_H II for the 100 brightest and dimmest fibres. S/N > 3 for the used lines. The DIG models for the rest of the sample can be found in Appendix A.