Epoch-to-epoch variations in the spectra of several regions within the Sgr A complex shown in Fig. 4. Top panel: brightest (in 2022) reflection region, “Sgr A:re”. Middle panel: region around G0.13-0.11, “Sgr A:nt”. Bottom panel: relatively faint region within the Sgr A complex, “Sgr A:bg”. The spectra taken from Chandra observations in 2004 (black) and 2022 (red) are fit with the same model with all parameters tied except for normalizations of the reflected continuum and fluorescent lines. The composite reflection models for each observation are shown with dashed lines. The expected contribution of the spatially smooth Galactic bulge emission is shown in blue for comparison. The data were binned only for visualization purposes.