Comparison of the best-fit solutions for s = 0 and s = 1 for the K3 dataset. a) Image of the unconvolved best-fit model disk with s = 0 at logarithmic stretch. b) Same for s = 1. Note the lane of shadowing from the inner disk visible on the far-side gap wall. c) S/N map of the residual image after subtracting the ADI-processed best-fit model image with s = 0 from the ADI-processed data at a linear stretch of ± 5σ. d) Same for s = 1. e) Difference of the images d)–c) at a linear stretch of ± 2σ. The χ² of the s = 1 model exceeds that of the s = 0 model by 7.4 Δχ².