Distribution of the $L_X^{0.5-2}$ as a function of the SFR, sSFR, and the He I/H α age indicator. The left panel shows the distribution of the SFR-M_⋆-D stacks in the $L_X^{0.5-2}$-SFR plane colour-coded with the He I/H α ratio. Red line depicts the standard scaling relation from Mineo et al. (2014) (M14). The right panel shows the same distribution in the $L_X^{0.5-2}/\mathrm{SFR}$ – sSFR plane and the red line the scaling relation from Lehmer et al. (2016) (L16).