Vapor–liquid coexistence curves obtained from GEMC simulations with different N_t, ρ_t, and r_cut parameters. The symbols show the orthobaric and average densities and the critical points. The lines show the fits to the scaling law and the law of rectilinear diameters. (Top) Data probing cutoff effects with values provided in the legend (SP stands for shifted potential) for N_t = 5500 and ρ_t = 0.316. (Middle) Data probing total density effects with ρ_t values provided in the legend for N_t = 5500 and r_cut = 5σ. (Bottom) Data probing system size effects with N_t values provided in the legend for ρ_sys = 0.316 and r_cut = 3.5σ for the three larger systems and r_cut = 2.5σ for the 216-particle system.