Fig. 1
rms noise level determined on the individual tiles of maps using a Gaussian fitting to the distribution of the pixel values between |b| ≤ 1°. The region analyzed in Contreras et al. (2013) is indicated by dotted lines. The horizontal dashed line shows the average 0.07 Jy/beam noise level for the main part of the survey (|ℓ| ≤ 60°).
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