Comparison between synthetic fluxes based on T_eff and log g values from multiple ionization equilibria to observed spectral energy distributions for the sample stars with available IUE data. Displayed are wavelength-weighted fluxes λF_λ from the far-UV to the near-IR in the K-band. Observations consist of IUE spectra (black lines), Johnson UBVRIJHK photometry (boxes) and 2MASS JHK photometry (circles). Model fluxes are indicated by red lines. The observations have been dereddened adopting colour excesses as indicated and the model fluxes have been normalised with respect to the observations in V. Some fluxes have been scaled for clarity, as indicated.