Comparison of the experimental and theoretical values of the pressure broadening and shift parameters, γ₀ and δ₀ (in units of 10⁻³ cm⁻¹ atm⁻¹ ). Black curves correspond to the ab initio calculations performed in this work, while green and red points report the experimental measurements from Ulivi et al. (1989) and Lu et al. (1993), respectively. The olive curves are the single-power-law (for γ₀) and linear (for δ₀) temperature dependences retrieved from the measurements of Sung et al. (2022).