Top: difference map between the thermal dust amplitude at 353 GHz presented in this paper using the Planck 30 to 353 GHz frequencies, and that derived by Planck Collaboration XI (2014) using only the Planck 353, 545 and 857 GHz channels and the 100 μm IRIS map. Both maps are smoothed to a common resolution of 40′. Middle: the same difference map, but accounting for relative monopole, dipole and zodiacal emission treatment. Bottom: T–T plot between the same two maps after applying relative corrections. Any pixels with a CO amplitude at 100 GHz larger than 1 K km s^-1 are removed from this plot.