Distribution of our 100000 Monte Carlo simulation results for T126 for N₂,CH₄, H₂ and Ar. As N₂ increases, the dispersion of N₂ and CH₄ mole fraction decreases and their 1σ error varies from ±12 to 21 × 10⁻⁴. For Argon, the dispersion increases with its mole fraction and 1σ varies from ±1 to 3.5 × 10⁻⁷. For H₂, 1σ ± 7 × 10⁻⁵. Each colour correspond to an altitude, from 1500 km (dark blue) to 950 km (yellow).