Comparison of the NIR flux density (F150W (left panel) or F277W (right panel) filter, aperture from 250 to 1000 au), divided by the square root of the luminosity of the star in solar luminosities, to the accretion rate. Blue dots (Ṁ ≥ 5 × 10⁻¹⁰ M_⊙/yr) and cyan triangles (Ṁ < 5 × 10⁻¹⁰ M_⊙/yr) are for the class II stars (local density ≤ 5 × 10⁴ cm⁻³), and the small red squares are for the class I stars (local density > 5 × 10⁴ cm⁻³). The black solid line is a least-squares fit giving log y = (1.24 ± 0.07) log x − (11.9 ± 0.18) (F150W, left panel) and log y = (1.25 ± 0.05) log x −(11.1 ± 0.11) (F277W, right panel).