Fig. 7.

Median sampling depth $d_{50}$ normalized by the transport mean-free path $l^{*}$ as a function of ${\mu }_{\mathrm{s}}^{\prime }/{\mu }_{\mathrm{a}}$ at spatial frequencies $f_x{l}^{*}=0$, 0.05, 0.1, 0.2, and 0.3. For clarity, results for only a subset of $f_x$ values are plotted here. Results for additional $f_x$ values are provided in the supplemental data.