Fig. 4.
Pearson correlation coefficient, r, evaluated between S-PASS data and WMAP data in regions spanning 15° ×15°. The WMAP data are the same in all panels, while the S-PASS data are, from top to bottom, (1) uncorrected data RM-0; (2) Faraday-corrected using RM-SPASS map (Carretti et al. 2019); and (3) Faraday-corrected using RM-HE (Hutschenreuter & Enßlin 2020).
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