Bandhead (left) and “bandtail” of CO ﹩v\,=﹩ 2–0 (middle) and absorption features of ﹩v=0\to 2﹩ over the CO ﹩v\,=﹩ 3–1 overtone band (right) for IRAS 03445+3242 (top) and IRAS 04239+2436 (bottom). The colors are the same as in Figure 1. The horizontal black lines in the left and middle panels indicate a length scale of 200 km s⁻¹. The observed spectra are boxcar smoothed by 15 km s⁻¹ for clear spectral features.