Upper panel: the excess temperature toward M 82 in μK (with the standard errors) of the A3+A4 region with respect to the A1+A2 region in the three considered Planck bands up to galactocentric radii of 15′ (R0.25), 30′ (R0.50), and 1° (R1.00). Bottom panel: the same for the 360 control fields with the same geometry (shown in Fig. 1) equally spaced at one degree distance to each other in Galactic longitude and at the same latitude as M 82.