Compilation for all simulations of the maximum HOG correlation coefficient, η, as a function of f_CNM (top) and u_RMS (bottom). The data points show η measured in orientations of the LOS parallel (green) and perpendicular (yellow) to the mean magnetic field. The dashed line at η = 1 separates the CNM-dominated (η < 1) from the WNM-dominated (η > 1) regime. The observed value in the 3C196 field is η_obs = 0.72.