Comparison between the observed bution taken from the Adelman (filled black diamonds) and 2MASS (filled red squares) catalogues and best-fit theoretical flux (solid red line) calculated after five abundance analysis iterations for the  LLMODELS atmosphere of HD 220825 with the parameters T_eff = 9470 K and logg = 4.2. Open blue diamonds show the theoretical fluxes convolved with the corresponding filters that were used in actual observations.