K2 and TESS light curves with their spot model overplotted. The light curve was split into several parts (see Sect. 6.1.2) and a separate model was fitted to each of them. The model uses two dark spots of the same size. The stellar inclination (i = 90°), the spot temperature (T_spot = 3106 K), and the size of the spots were kept fixed for all models. Top: K2 light curve. A spot size of R_spot = 0.312 R_* (↔ filling factor f = 0.049) was used in the model. Bottom: TESS light curve. Here a spot size of R_spot = 0.278 R_* ( ↔ f = 0.039) was used.