Comparison of the BB spectra of the channel/mission/full simulated and flight data maps using pseudo-spectra computed on 75% of the sky with the Galaxy and point sources masked, showing excellent agreement at 70 GHz but a few percent discrepancy at almost all angular scales at 100 GHz. Left: 70 GHz full map BB-spectra. Right: 100 GHz full map BB-spectra. Top: linear horizontal axis shows small scale behaviour. Bottom: logarithmic horizontal axis shows large scale behaviour.