CP experimental spectrum after processing allowed the removal of contributions from known close-shell species (upper trace), and comparison with a PGOPHER simulation for FC(O)NH₂ in υ = 0. The simulation was obtained using the final set of spectroscopic parameters (see Table G.1), a temperature of 300 K, and a Gaussian profile with a full width at half maximum of 0.6 MHz. The shaded area in light purple in the upper panel is zoomed in on in the bottom left panel; that in orange is zoomed in on in the lower right panel. Discontinuities in the processed experimental spectrum correspond to regions where lines of other molecules were lying.