Retrieved pressure-temperature profiles for the “idealized high-resolution low-noise” retrieval set (photon noise only at S/N = 50, R = 1000). Left panel: Pure HWO retrieval (magenta). Central panel: Pure LIFE retrieval (blue). Right panel: HWO+LIFE retrieval (yellow). In all panels, the 2σ and the 1σ intervals are shown in increasingly darker hues, as well as the input profiles (black lines) for comparison. Inside each panel, the inset plot shows the 2D posterior space of the ground pressure and temperature. In all panels and the inset plots, the surface pressure and temperature point in the P-T space is shown as a red square marker.