Period-radius diagram for small planets (R_p < 4 R_⊕) around K-type stars (4000 K < T_eff < 5300 K). The shaded blue area represents a Gaussian kernel density estimation of the points. The position of TOI-283 b is marked by the red star. The dashed olive line shows the position of the radius gap from Van Eylen et al. (2018), while the dotted pink line shows the position of the gap from Venturini et al. (2024). The data were taken from the NASA Exoplanet Archive (https://exoplanetarchive.ipac.caltech.edu/).