EE power spectra (left column) and cross-power spectra (right column) for Galactic masks with f_sky=0.27 (bottom) to 0.73 (top). In each plot, the cross spectrum of the two Planck half-mission maps is drawn in purple. The blue, orange, and red curves represent the power spectra of the SRoll2, GNILC, and FoCUS maps, respectively. All the spectra are binned over ten multipoles and normalized by dividing the power with the f_sky value to keep the scales consistent between the plots.