Kiel diagram of TOI-615 (upper left) compared to model evolutionary track from Demarque et al. (2004). The red symbol represents the measured T_eff and log ɡ, and the shaded swathe corresponds to the uncertainties in the stellar mass and metallicity. Age points are marked in blue. Spectral energy distribution of TOI-615 (upper right), TOI-622 (bottom left), and TOI-2641 (bottom right). Red symbols represent the observed photometric measurements, where the horizontal bars represent the effective width of the passband. Blue symbols are the model fluxes from the best-fit Kurucz atmosphere model (black).