Average number of fitted Faraday components of the observed sources (green) and the same sources from S19 (red) as a function of Galactic latitude. The errorbars are Poisson uncertainties. The central panel shows the difference in the average number of components per bin between this work and S19. The mean difference (|Δn| = 1.1 ± 0.1) is plotted as the dashed line. The bottom panel shows the number of sources in each 1-degree bin.