Left: maps of the peak polarized intensity in selected Faraday depth ranges. Right: maps of the Faraday depth of peak emission, for the same ranges in Faraday depth. Pixels with peak polarized intensity below 10 σ_QU are masked. Top panels: Faraday depths between −7 and +1.5 rad m^-2. Bottom panels: Faraday depths between +1.5 and +11 rad m^-2. The compact sources in the top panel are caused by the instrumental polarization.