Example presenting the (a) ¹³CO, (b) CH 3335 MHz, and (c) H I spectra toward G168.13-16.39. In subplots (a) and (b), the dashed red curve represents the Gaussian fitting results, while the dotted green curves represent each component. In subplot (c), the dashed red curve denotes the recovered background H I emission without absorption (T_b). The dotted green and vertical black lines denote the decomposed τ and V_lsr of HINSA, respectively.