Temperature dependence of the lattice parameters of CO₂ clathrate hydrates formed in solutions of MS10.5 and MS3.1 at various pressures. From top to bottom: MS10.5 at 5 bar, MS10.5 at 10 bar and MS3.1 at 20 bar. “(1)” and “(2)” indicate that the cooling was performed first, followed by heating. For ease of presentation blue symbols represent values obtained during cooling and red values obtained during heating.