Averaged weighting functions for different physical parameters and different solar structures. From left to right: B, γ, and vlos. From top to bottom: granules, intergranules, penumbra, and umbra. Each panel indicates the number of points from Fig. 1 employed in the average. The vertical dashed lines correspond to the median of each distribution. Shaded areas encompass the regions of highest sensitivity (see text for details).
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