Integrated luminosity of the three strongest lines in the main 1.07 μm C⁰ complex plotted against the mass accretion rate, Ṁ, calculated from the H⁰ Brγ line at 2.166 μm. Uncertainties in the C⁰ line luminosities are included, along with a linear regression fit to the data (dotted line). The Pearson correlation coefficient is 0.79, indicating a high likelihood of association with Ṁ.