Top-left panel: relation of X-ray bolometric correction (κ₂₋₁₀) with ﹩{L}_{{\rm{PC}}}^{2-10}﹩. The blue circles, green diamonds, purple down-triangles, red up-triangles, and orange squares represent NGC 1566, NGC 2617, Mrk 590, Mrk 1018, and IRAS 23226–3843, respectively. The yellow stars represent the binned data point. The black line represents the best fit (Equation (1)) to the whole dataset. Top-right panel: same as left panel but with data rebinned for each source. The shaded regions represent the 1σ scatter. Bottom panels: same as top panels but relation between κ₂₋₁₀ and L_bol (Equation (2)).