Channel maps of the H41α line (gray background, in K km s^-1 ) with overlays of the [C II] (red contours), the τ(H I) optical depth (blue contours) (left panels), and the ¹²CO J = 1 → 0 (green contours) (right panels), at the velocity ranges of the peak [C II] emission associated with (from top to bottom) the H II, H I, and H₂ gas regimes. The corresponding velocity ranges are shown in the top-left of each channel map. The contour lines (from thin to thick) are 10% (dashed line), 25%, 50%, 75%, and 90% of the respective peak emissions. All the maps were convolved with a 30′′ beam to increase the S/N of the H41α map.