Ṁ_acc distribution as a function of stellar mass for the population of NGC 2264 accreting members observed at CFHT. Upper limits are shown for those objects that fall below the estimated confidence threshold for accretion detection (see text). For some objects, no significant Ṁ_acc has been detected at the median state of the system, but they do show a significant accretion activity (i.e., above the detection level) at the brightest state; in these cases, an upper limit is placed at the detection threshold, while a cross marks the maximum Ṁ_acc actually detected. Orange dots and green triangles mark two subgroups of objects dominated respectively by stochastic accretion bursts and variable extinction from a rotating inner disk warp (Stauffer et al. 2014).