Time evolution of X-ray (5–100 Å), EUV (100–920 Å), and total XUV luminosity of TOI-4602, according to Penz et al. (2008) and the X-ray/EUV scaling by Sanz-Forcada et al. (2025) (red lines) and according to Johnstone et al. (2021) (blue lines). Uncertainties on the age and X-ray luminosity of TOI-4602 q(square symbol) are also indicated, with respect to the nominal value of L_x = 10²⁷ erg/s at 6.8 Gyr. The grey area is the original locus for dG stars in Penz et al. (2008). For comparison purpose, we also show the current position of the Sun and the full range of variability during an 11-year magnetic cycle.