Photometry from various instruments described in Section 2.2, centred on the time from midtransit predicted by the joint fit model. From top to bottom, in chronological order: LCO CTIO (yellow circles); El Sauce Rc (green, offset by -0.05 in flux); PEST (sea green, offset by -0.10); El Sauce B (turquoise, offset by -0.15); LCO SSO (blue, offset by -0.20); and CDK17 (orchid, offset by -0.25). The photometry is binned as darker circles. The planet model from the joint fit using the TESS limb darkening is overlaid (dark grey solid lines), alongside the individual fits to each transit from the TTV search described in Section 5.5 for the LCO CTIO, PEST, LCO SSO, and CDK17 photometry (dashed black lines). The different models generally agree well, with a slight difference in transit “dip” shape caused by the difference in limb darkening parameters between the fits.