For the full FoV (FFOV, blue line) and the RoIs framed in Figure 2. Top: T along the optical depth in the atmosphere (log(τ)) for STiC (dashed line), RPs@STiC (left), IRIS² (center), and deepIRIS² (right). Middle: ratio between the uncertainty of the new methods with respect to the uncertainty of STiC. Bottom: uncertainty multiplication factor (UMF_T) for the new methods (see Equation (3)).