Total intensity light curves for Sgr A* for four sub-band frequencies (1 min time bins). The light curve of each sub-band is offset by +0.2 onwards from the first sub-band in the flux density for visualization purposes. The error bars include systematic and 1σ statistical uncertainties. The light curves show similar overall trends, with the highest-frequency sub-band (2.87 GHz) leading the lowest-frequency sub-band (2.70 GHz).