Chemical composition for Y1 dwarf WISEPAJ1541-22 calculated with FastChem. The upper panel shows the volume mixing ratios of major gas-phase species. Retrieved abundances from the BeAR retrieval and their 1σ confidence intervals are depicted by the shaded areas. Stable condensates are shown in the lower panel. Their number densities, n_c, refer to the effective molecule number contained in the condensed phase and do not correspond to an actual cloud particle number density. The cloud top position and its 1σ confidence interval constrained by the retrieval calculations ($p_{\mathrm{t}}={0.47}_{-0.06}^{+0.04}$ bar) are marked by the horizontal gray area. We note that the corresponding cloud bottom pressure ($p_{\mathrm{b}}={1.55}_{-0.21}^{+0.16}$ bar) lies approximately one atmospheric scale height beneath the cloud top pressure.