Pressure against temperature in the uppermost regions. The light pink line shows the profile for SSM-1KM, which largely overlaps the light blue line showing the SSM-MLT. The dashed black line shows the profile of the solar model using an averaged 3D atmosphere as the outer boundary condition (“patched model”, Jørgensen & Weiss 2019). SSM-3KM is represented by the green line. The segment corresponds to the outermost 0.0026 R_⊙.