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Fig. 6.


Histograms of the average polarization in all subregions with N pixels. The histograms are represented by gray vertical bars, where black and white corresponds to 600 subregions and 0 subregions, respectively. Black lines: expected noise levels for Q/I, U/I and V/I when averaging over N pixels; magenta dots: standard deviation of the histogram for each subregion; see text for details.

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