The ratio of low-mass stars (0.08–1.0 M_⊙) to brown dwarfs (0.03–0.08 M_⊙) for the ONC as a function of radius. The plus signs with error bars indicate the field star corrected measurements whereas the squares indicate the measurements before field star subtraction. The inner data point is from Slesnick et al. (2004) and the horizontal line is the average ratio with the 1σ error interval provided by the dashed lines.