Top: power spectra of the 217 GHz raw temperature maps, with various Galactic masks, differenced against the f_sky = 30% case. Middle: the same, but after map cleaning. The y-scale is now 10 times smaller. Bottom: the same as the middle panel, but for 353 GHz. Additionally, we first subtract the 143 GHz map to remove scatter due to CMB sample variance. A model consisting of the sum of two power laws is then fit through these points. This sets the shape of the residual Galactic template. In the middle panel this template is scaled by an amplitude to fit the residuals seen there, showing that the Galactic residuals after map cleaning do not change shape significantly between 353 and 217 GHz.