Detailed overview of our field-averaged FGPXS, as well as other datasets and some selected models from the literature. Upper panel: spherically averaged FGPXS with 1σ uncertainties for the field-combined data presented in this paper (black), the COMAP ES field-averaged FPXS (blue; Ihle et al. 2022), and the COPSS power spectrum (orange; Keating et al. 2016). Lower panel: Corresponding power spectra divided by their respective 1σ uncertainty. Inset: zoom-in of the COMAP data points and two comparable models from the literature, namely the fiducial second season COMAP model (Chung et al. 2022) and the Li-Keating model Li et al. (2016); Keating et al. (2020) model. None of the models includes any line-broadening discussed by Chung et al. (2021). Our data points and those of COMAP ES have been slightly offset from their true k-position to increase readability (see Table B.1 for an overview over bin centers, FGPXS values and uncertainties).