The GMRT H I 21 cm spectra obtained from the 30﹩\mathop{.}\limits^{^{\prime\prime} }﹩0 resolution spectral cube, integrating over the spatial regions identified in Figure 1. In each panel, flux density (in mJy) is plotted against barycentric velocity (in km s⁻¹), relative to z = 0.0063. Panels (A) and (C) show, respectively, the H I 21 cm spectra for NGC 4141 and LEDA 2582852, both at a velocity resolution of ≈10.4 km s⁻¹, while Panel (B) shows the H I 21 cm spectrum for the southwestern H I cloud, after Hanning-smoothing and resampling at a velocity resolution of ≈20.8 km s⁻¹. The dashed blue lines indicate the ±1σ values for each spectrum, measured from the offline regions.