CO overtone band emission spectra of IRAS 03445+3242. The observed spectra on 2015 January 21 are plotted in gray, and the synthesized spectra of the best-fit models for the whole CO overtone band (Table 3) and for only v = 2–0 (Table 4) are plotted in red and blue lines, respectively. The green lines indicate the ± 1σ observation errors. The sharp features in the green lines are caused by telluric contamination. The red and blue tick marks indicate the position of narrow absorption R- and P-branch rovibrational transitions of v = 0 ﹩\to ﹩ 2.