The thickness (twice 1. moment) of the PB calculates to 601.8804297305205 A. The profile description is:
Parameter:    'scale'    , value=1.10331 +/- 0.0173, bounds=[0.8, 1.5]
Parameter:     'bkg'     , value=8.7314e-07 +/- 2.13e-07, bounds=[1e-08, 5e-05]
Parameter:'sio2 - volfrac solvent', value=0.0166402 +/- 0.00578, bounds=[0.0, 0.1]
Parameter:'polymer - thick', value=22.5047 +/- 2.06 , bounds=[1.0, 50.0]
Parameter:'polymer - rough', value=2.27259 +/- 0.678, bounds=[0.05, 6.0]
Parameter:'polymer - volfrac solvent', value=0.120535 +/- 0.00756, bounds=[0.0, 0.4]
Parameter:'freeform vfp - spline dzf[0]', value=0.00109234 +/- 0.000355, bounds=[0.001, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[1]', value=0.0613041 +/- 0.0174, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[2]', value=0.137804 +/- 0.0257, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[3]', value=0.0900054 +/- 0.0162, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[4]', value=0.189273 +/- 0.033, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[5]', value=0.0608706 +/- 0.0117, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline vff[0]', value=0.578012 +/- 0.00736, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[1]', value=0.998779 +/- 0.456, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[2]', value=0.618004 +/- 0.0299, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[3]', value=0.905677 +/- 0.0314, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[4]', value=0.0678501 +/- 0.0152, bounds=[0.01, 1.0]
Parameter:'solvent - sld', value=6.28167 +/- 0.0263, bounds=[6.0, 6.4]
