Extended Data Fig. 1: Landscape of millimeter line monopole intensities.
From: Cosmic CO and [C II] backgrounds and the fuelling of star formation over 12 Gyr

Same as Fig. 2 but shown in specific intensity Iν (Jy sr−1) rather than brightness temperature. Curves show posterior median CO and [CII] line monopoles, color-coded by redshift. The jointly fitted CIB dust-continuum monopole is shown in black, and the sum with the line contribution matches the CIB-only fit in the companion work3, based on the same data vector. The thermal SZ spectral distortion is shown in red, with the dashed segment indicating the decrement20. All shaded bands correspond to 68% uncertainties. Filled gray regions show atmospheric transmission windows at a dry site49. This figure is analogous to Supplementary Fig. 2 but includes only updated empirical constraints from cross-correlation-based tomographic intensity mapping.