Fig. 2: Normalized spectrophotometric light curves for the JWST-PRISM transit of WASP-39b.
From: Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM

The light curves were created by summing over wide wavelength channels (wavelength ranges indicated on the plot). Overplotted on each light curve are their best-fit models, which include a transit model and detector systematics. Light curve systematics have not been removed from the data.