Rotation diagrams for ro-vibrational H₂ emission in an aperture at 0′.′78 from the source (AP3), adopting three different values for the extinction A_K . Fit parameter medians and uncertainties listed in the shaded box are derived using a sampling procedure (see Section 3.3.3). 100 sampled Boltzmann distribution fits are plotted for three different values of A_K to portray its influence on the best-fit ortho-to-para ratio (OPR). ${\overline{A}}_{\text{K}}$ is the mean and σ is its uncertainty. T is short for temperature and N for column density.