Profiles of linear scans performed in the Planck maps at 217 (dash dot line), 353 (dashed line), 545 (dotted line) and 857 GHz (continuous line) normalized to the 217 GHz profile, to better compare them. The direction along which the cuts have been performed is indicated in the small inset on the top left. It is superimposed to the 857 GHz Planck map (PA = 235deg) and has been chosen in order to include the extended structure.