The thickness (twice 1. moment) of the PB calculates to 453.51655597449627 A. The profile description is:
Parameter:    'scale'    , value=1.09845 +/- 0.0514, bounds=[0.8, 1.5]
Parameter:     'bkg'     , value=7.3479e-07 +/- 7.61e-07, bounds=[1e-08, 5e-05]
Parameter:'sio2 - volfrac solvent', value=0.0680727 +/- 0.0143, bounds=[0.0, 0.1]
Parameter:'polymer - thick', value=20.1304 +/- 3.85 , bounds=[1.0, 50.0]
Parameter:'polymer - rough', value=1.31568 +/- 0.996, bounds=[0.05, 6.0]
Parameter:'polymer - volfrac solvent', value=0.0227744 +/- 0.0444, bounds=[0.0, 0.4]
Parameter:'freeform vfp - spline dzf[0]', value=0.00201492 +/- 0.12 , bounds=[0.001, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[1]', value=0.021573 +/- 0.00314, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[2]', value=0.062516 +/- 0.0101, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[3]', value=0.226367 +/- 0.0353, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[4]', value=0.220303 +/- 0.0304, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[5]', value=0.219342 +/- 0.0591, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline vff[0]', value=0.695043 +/- 0.0418, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[1]', value=0.870654 +/- 0.0349, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[2]', value=0.620574 +/- 0.0249, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[3]', value=0.56509 +/- 0.0115, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[4]', value=0.137894 +/- 0.045, bounds=[0.01, 1.0]
Parameter:'solvent - sld', value=6.23824 +/- 0.0956, bounds=[6.0, 6.4]
