Examples of faint Galactic polarised emission, which is only clearly detected in the final stacked Faraday cube. The images are given in the polarised intensity at Faraday depths of +14.5 (upper images) and +16.25 rad m⁻² (lower images) for the reference (left images) and the final stacked cube (middle images). The corresponding Faraday spectra at a location of the red circle in the images are given in plots on the right.