Phase diagrams of the N₂+CH₄ system at 110, 115, 120, and 125 K. Circles represent laboratory measurements from Parrish & Hiza (1974), curves are computed according to the PC-SAFT EoS (no experimental data are available at 125 K). Solid lines are the liquidus, while dashed lines represent the vaporus. The star represents the case where and P = 14 bar, which is tobe compared with the point marked by a triangle (see text). This figure is similar to Fig. 3b of Tan et al. (2013).