Panel E: <|B|> derived from the maximum of the distribution of the values along the central meridian (within –7° and 7° from disk center) in 11 × 11 pixel boxes. Panel F: same than panel E, but after a correction from the noise. Panel G: same than panel D, but considering only pixels above 1.5 times the noise level. Panel H: fraction of pixels (in the 11 × 11 pixel box) used in panel G.
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