Residual between our γ-ray-derived extragalactic background light intensity and IGL measurements (S. P. Driver et al. 2016; S. Koushan et al. 2021) at z = 0. Panels display, from top to bottom, the residual ﹩{R}_{i}=\nu {I}_{\nu ,i}^{{\rm{IGL}}}-\nu {I}_{\nu ,i}^{\gamma -{\rm{ray}}}﹩, the corresponding Z-score, and the two-sided p-value as a function of wavelength. Results are presented for both the empirical reconstruction and the physical one. The horizontal dotted gray line in the bottom panels represents p = 0.05.