Comparison of the average profiles obtained with different methods: median (black points and gray shaded area), weighted mean (red), and fit mean (blue). Filled points refer to values derived by all measurements, while shaded regions show the values obtained when applying the SOU/BKG > 0.2 selection. Out of the core, the different methods return consistent results after excluding regions with low SOU/BKG, while if we use all measurements the weighted mean always returns lower values than the other methods.