Determination of the apparent κ from the combination of a Maxwellian plasma and a plasma with a κ-distribution with known κ. The known κ is labeled in the title of each image in the panel. Black lines and their respective coding are the same as in Fig. 7. Colored lines denote the dependence of the relative height of the ionization edges on the emission measure ratio EM(Maxw)/EM(κ) = 10^-2 (red), 10^-1 (orange), 1 (green) and 10 (blue). Asterisks denote the points corresponding to log(T/K) = 6.8, 7.0, and 7.2. Except for the top left panel for κ = 2, these points are always close to the respective isotherms (gray lines).