(a)    Fit to data
(b) Fit to data
Figure 20: Differences (points) between EPSR fits (lines) to the average neutron (from Figure 5) and X-ray data (from [42], originally from [85])) for H O data only (a) and D O data only (b). In both cases, the corresponding D O (a) and H O (b) difference data are shown for comparison, along with the simulated interference scattering for the same datasets.