X-ray bolometric correction as a function of M_BH (top) and λ_Edd (bottom). The grey circles correspond to the data points from BASS (Gupta et al. 2024). The black circles show the same data, but binned along the x-axis. We also show k₂₋₁₀ as a function of M_BH and λ_Edd for the model SEDs that agree with the observed L_2−10 keV–L_2500 Å correlation obtained by matching the distributions of M_BH and λ_Edd to those of the BASS sample (red diamonds).