Maximum mass of planetesimals m_plt used in our model. The solid lines show the estimated m_plt in the model by Lau et al. (2022). The different colors correspond to different δ. The dashed lines show the estimated m_plt in the model by Liu et al. (2020). The different color corresponds to different f_plt. The right y axis shows the radius of the protoplanet. We use the mean density of 3g/cm³ to estimate the radius.