Fits to the inner disk radius. Top: R _in parameter from the kdblur model. Bottom: R _in derived from the normalization to the diskbb model, assuming mass = 10  M _☉, D = 10 kpc, and cos (θ) = 0.1. The first two of these parameters are typical values for BH systems and the third one is based on our average fitted value. The vertical lines and letters are as defined in the caption to Figure 1. The horizontal line in the top plot shows the weighted mean.