Comparison of a Band function fit (top) and a 2SBPL fit (bottom) to the time-integrated spectrum with S/N = 300. The red, blue, cyan, and green data points in the count spectrum show the three NaI detectors and the one BGO detector used for the fit, respectively. It is clear from the uneven residuals in the top panel that the Band function did not produce a satisfactory fit. The 2SBPL function performed much better in this region of high S/N, being statistically preferred with ΔAIC = 114. The best-fit Band parameters were α = −0.92 ± 0.02, β = −2.33 ± 0.02, and E_p = 152 ± 4 keV, and the best-fit 2SBPL were α₁ = −0.69 ± 0.06, α₂ = −1.45 ± 0.04, β = −2.49 ± 0.04, E_p = 178 ± 7 keV, E_b = 27 ± 3 keV.