Entropy “tuning fork” diagram, i.e., specific entropy in the convective zone as a function of planet mass at the end of the formation phase when the protoplanetary disk disappears (t = t_disk). The blue empty circles are the cold-nominal population. The red stars are the hot population. The black and gray points show the cold-classical population. For this population, planets with M_core ≤ 17 M_⊕ are shown with black points, mimicking Marley et al. (2007). Planets with M_core > 17 M_⊕ are displayed as gray points.