Ratio of the mass fractions of the proton and neutron gas and of the α particles with (Y_i(w)) and without (Y_i(wo)) the tetraneutron for a fixed proton fraction of y_p = 0.3 (left) and y_p = 0.1 (right) and T = 4 (top), 10 (middle) and 20 (bottom) MeV, in a calculation where we take the binding energy of the 4n as −2.37 MeV. In all panels, the FSU EoS is considered, and the scalar cluster–meson coupling is taken as x_s = 0.85 (solid) and x_s = 0.92 (dashed). We highlight the fact that the scale of the y-axis of the bottom panels is different, and the ratio of the top right panel is divided by 3.