Fig. B.1.
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Optical light curve downloaded from the ATLAS forced photometry server spanning several years before and after the 2020 outburst. The data were binned to a 7-day cadence. We note that these data show the difference fluxes and magnitudes compared to an ATLAS reference image. The plot indicates that several years before and after the 2020 outburst the AGN remained in a semi-stable faint state.
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