Gaussian velocity fits of the extracted N₂H⁺ isolated components. In black we show the high S/N isolated components from panels c), e), and f) in Fig. 2. The individual Gaussian components and the obtained model are represented with dashed blue and solid red lines, respectively. On the right side of each panel we indicate the peak intensity (I), the velocity centroid (v), and velocity dispersion (σ) of each Gaussian component. The notations 1^st, 2^nd, and 3^rd indicate the Gaussian velocity components from left to right.