Example of an inverted atmosphere and respective atmospheric outputs. Left column: full continuum-normalised Stokes vector (I, Q, U, and Vfrom top to bottom) shown for all five spectral lines considered by the inversion scheme for Pixel 15 from Table 2 (x = 45, y = 30). The dashed black lines plot the observed spectra, and the solid red lines plot the fitted spectra returned by SIR with S1. Right column: retrieved atmospheric parameters (namely T, B_SIR, γ, and v_LOSfrom top to bottom) are shown as a function of log τ₅₀₀₀. The stratification of T in the initial hot umbral model is also shown (dashed orange line overlaid in the top right panel). The value of Φ during this inversion cycle was 96°.