Intensity and relative orientation angle maps from the THOR HI and GRS ¹³CO observations presented in Fig. 7. Left panels: HI (teal) and ¹³CO emission (red) in the velocity channels with the largest spatial correlation in the velocity range 30 ≤ v_LSR ≤ 60 km s⁻¹, as inferred from the V values shown in Fig. 9. Right panels: relative orientation angle ϕ, Eq. (1), between the gradients of the HI and ¹³CO intensity maps in the indicated velocity channels. The white portions of the ϕ map correspond to areas where the gradient is not significant in either tracer, as estimated using the rejection criteria I ≥ σ_I (top panels) and I ≥ 7σ_I (bottom panels). The black circles in the right panels correspond to the positions and effective sizes of the MC candidates from the Rathborne et al. (2009) catalog in the aforementioned velocity range.