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Fig. 8.
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Cold-gas cosmic density, ρH2, as a function of redshift. The gray dashed curve in each panel is the intrinsic ρH2 from Eq. (18). Colored solid lines are the simulation-based estimate of ρH2 derived from the CO[Jup > 1] galaxy cross-spectra. The top left panel shows the relative difference from the intrinsic ρH2.
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