Emission spectra fits only for NIRCam’s Eureka! reduction from Hu et al. (2024). In each panel, the total spectrum is denoted in black, while the major absorbers are highlighted in colour. The heat redistribution coefficient for the top panel is f = 1/4, the other panels correspond to f = 1/3. The absolute flux of NIRCam is adjusted to achieve the minimum χ² values. The best achieved χ² value for a blackbody-like spectrum is 27.0. Also shown in red is the low-flux Spitzer measurement from Demory et al. (2016b).