Comparison of the M2 diffuse reconstruction with the diffuse emission templates published by the Fermi Collaboration (diffuse foreground: gll_iem_v07, isotropic background: iso_P8R3_SOURCE_V3_v1). Left: 2D histograms of the diffuse flux found by our M2 reconstruction vs. the diffuse emission templates for the energy bins 0.56–1.00 GeV, 10.0–17.8 GeV, and 178–316 GeV. The histogram bins are logarithmically spaced in both fluxes. The top row shows the histogram counts with a linear color scale, while the bottom row shows them with a logarithmic color scale. The dashed red line marks perfect agreement. Right: Histogram of flux ratios (our diffuse reconstruction divided by the corresponding voxel values predicted by the template) for all spatio-spectral bins. Flux ratios are binned and displayed on a logarithmic scale. Numbers larger than 10⁰ indicate we reconstruct more flux than the template predicts.