Mass-radius diagram of well-characterized planets (that have masses and radii characterized with a precision better than 30% and 10%, respectively) with radii of R < 4 R_⊕ taken from the Transiting Extrasolar Planet Catalogue (Southworth 2011). The planets are colorcoded based on the host stellar temperature, from hot (yellow) to cold (red). Theoretical M-R relations are taken from Zeng et al. (2019). TOI-3493 b is marked with a blue star.