EE pseudo auto-spectra evaluated for 100 GHz (solid) and 143 GHz (dashed) on the simulations shown in Fig. 1. Here we apply a symmetric Galactic cut of 20°, retaining 66% of the sky. The rise at higher multipoles is caused by the autocorrelation of the electronic noise present in the maps which is not debiased. The red lines represent the average of 100 FFP8 simulations (Planck Collaboration XII 2016) containing only white noise and 1/f noise. The black solid line corresponds to a EE power spectrum with τ = 0.055.