Calculated minus observed X-ray over bolometric flux values as a function of the $R_{\text{IRT }}^{\mathrm{\prime }}$-index. The panels show the different spectral types and the color coding of the sources is the same as in Fig. 4. The dots in the right panels show the values for the eRASS:5 detected sources and the dashed and solid histograms in the left panels show the distributions of the calculated minus observed values for eRASS1 and eRASS:5, respectively.