Gaussian decomposition of the higher-J (﹩4\leqslant J\leqslant 9﹩) CO transitions for IRAS 03445+3242 (left) and the higher-J (﹩4\leqslant J\leqslant 11﹩) ones for IRAS 4239+2436 observed in the second (middle) and the last (right) epochs: a deep spectrally unresolved component (∼8 km s⁻¹; black line) and a shallow medium-width component (∼30–50 km s⁻¹; orange line). The first epoch observation has a similar decomposition to the second epoch observation for both sources. The medium-width component in IRAS 03445+3242 is too weak to be analyzed quantitatively. However, in IRAS 04239+2436, the medium-width component is clearly detected, and its central velocity and line width become more blueshifted and broader in one year.