The thickness (twice 1. moment) of the PB calculates to 56.252667396516614 A. The profile description is:
Parameter:    'scale'    , value=0.578387 +/- 0.00113, bounds=[0.1, 1.5]
Parameter:     'bkg'     , value=6.5935e-08 +/- 5.96e-08, bounds=[1e-08, 5e-05]
Parameter:'sio2 - volfrac solvent', value=0.0021426 +/- 0.000674, bounds=[0.0, 0.1]
Parameter:'polymer - thick', value=6.44116  +/- 1.5 , bounds=[2.0, 20.0]
Parameter:'polymer - rough', value=0.449953 +/- 0.359, bounds=[0.05, 1.0]
Parameter:'polymer - volfrac solvent', value=0.0189212 +/- 0.0102, bounds=[0.0, 0.4]
Parameter:'freeform vfp - spline dzf[0]', value=0.0347618 +/- 0.0259, bounds=[0.001, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[1]', value=0.116864 +/- 0.0284, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[2]', value=0.0542164 +/- 0.0382, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[3]', value=0.0769645 +/- 0.0227, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[4]', value=0.0145636 +/- 0.00579, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[5]', value=0.21733 +/- 0.0848, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline vff[0]', value=0.640793 +/- 0.0516, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[1]', value=0.381409 +/- 0.0803, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[2]', value=0.543972 +/- 0.0951, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[3]', value=0.2441 +/- 0.123, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[4]', value=0.0100199 +/- 0.0576, bounds=[0.01, 1.0]
Parameter:'solvent - sld', value=6.36191 +/- 0.000135, bounds=[6.0, 6.362]
