Fig. 6.
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Source counts per HEALPIX cell in equatorial coordinates and Mollweide projection with HEALPIX resolution of Nside = 16. Radio sources observed within the TGSS-ADR1 (a), WENSS (b), SUMSS (c) and NVSS (d) radio source catalogues without flux density threshold are shown in the first column. In the second and third columns, we show the surveys masked with ‘mask d’ and ‘mask n’ and flux density thresholds of 50 mJy (TGSS), 25 mJy (WENSS), 18 mJy (SUMSS), and 25 mJy (NVSS).
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