Comparison of our estimations of G₀ with those of (Goicoechea et al. 2015) obtained from FIR luminosities. (a) Scatter plot of estimated G₀, from our reconstruction and from FIR luminosities. (b) Map of estimated G₀ with FIR luminosities, adapted from Goicoechea et al. (2019). (c) Map of the ratio between our G₀ reconstructions and those based on FIR luminosities. In both maps, the black contour identifies the regions where G₀ (MMSE) ≤ 3 G₀ (FIR).