Representation of the frequency coverage of STAPS and GHBN at the Galactic location of l = 310°.2, b = 52°.5. The top panel plots (a) present the original Stokes Q and U of STAPS and GHBN, and the bottom panel plots (b) present the data modified after the procedure explained in Sect. 5. The area highlighted in yellow represents the STAPS frequency coverage. The hatched gray areas indicate the frequency ranges for which GHBN lacks adequate data in the overlap region for proper comparison. These pixels were discarded in the original data due to the localized RFI, as is described by Ordog (2020).