NGTS monitoring plot showing average nightly fluxes for TOI-4862. Archival NGTS data (from before the TESS transit) are plotted in black, and follow-up monitoring is plotted in green with 1-σ flux errors. Measurements obtained on nights overly affected by noise or weather as well as four monitoring points from different NGTS telescopes with different offsets are not shown. Red lines denote the expected times of transit for NGTS-30 b/TOI-4862-b, with the first one aligning with the captured NGTS transit (circled). Nightly errors are generally higher in the newer datasets because the typical observation lengths were shorter in this monitoring stage.