Shown here is a comparison of spectral simulation of L 98-59 d with two bulk compositions, 100% N₂ (blue) and 30 % N₂ + 70 % H₂ (red). The JWST simulated observations including noise (three transits, R (wavelength resolution) = 20) for the two respective cases are show in orange (30 % N₂ + 70 % H₂) and green (100% N₂). The low- and high-μ atmospheres are detected at 6σ and 3σ confidence using three transits.