Best-fit model cross-spectra used for the EE high-ℓ likelihood. Black circles represent the data, binned at Δℓ = 50, while pale grey points show each multipole to give a sense of the scatter. Blue points and dashed lines correspond to negative values. The thick dark blue lines show the full model (sum of all components), and the dark green one is the sum of foreground and nuisance parts. Grey shaded areas are not used for cosmology.