The mass accretion rate is shown vs. the log(g) of the central star (top panel) and vs. the inferred age (lower panel) on a linear scale based on the log(g), temperature, and G. A. Feiden (2016) models. The upper limit on the mass accretion rate decreases with time, but at any given age, the mass accretion rate can have a wide range of values, including zero. Class I and II YSOs, covering a wide range of spectra index values, are well mixed together. While a few YSOs with gravity log(g) > 4.0 (>5 Myr of age) have detectable mass accretion, most objects older than this have negligible mass accretion rates.