Rotational diagrams of selected molecules towards YSO-G29: (a) CH₃CN, (b) HC₃N, (c) E − CH₃OH, (d) A − CH₃OH, (e) CH₃OCH₃, and (f) CH₃CCH. Panels c), d), and f) are reproduced from Martinez et al. (2025, in prep.). The coloured lines represent the best linear fit of each dataset. For HC₃N, the uncertainty of the rotational temperature was not estimated due to insufficient degrees of freedom.