TESS LCs. Top and middle panels: SAP and PDCSAP LCs of TOI-1238 as obtained by TESS in sectors 14, 15, 21, and 22 and processed by SPOC (left to right). Bottom panel: PDCSAP LCs with the detrending GP models overplotted (black line). The GP models were used to remove any residual instrumental effect (after masking the position of all transits). As illustrated, only the data of sector 22 required this additional correction to produce a flat LC.