The thickness (twice 1. moment) of the PB calculates to 53.69618565868325 A. The profile description is:
Parameter:    'scale'    , value=0.622058 +/- 0.00155, bounds=[0.1, 1.5]
Parameter:     'bkg'     , value=1.12435e-06 +/- 2.5e-07, bounds=[1e-08, 5e-05]
Parameter:'sio2 - volfrac solvent', value=0.030161 +/- 0.028, bounds=[0.0, 0.1]
Parameter:'polymer - thick', value=19.9831 +/- 2.61 , bounds=[1.0, 20.0]
Parameter:'polymer - rough', value=0.0628459 +/- 0.0107, bounds=[0.05, 6.0]
Parameter:'polymer - volfrac solvent', value=0.0562193 +/- 0.0179, bounds=[0.0, 0.4]
Parameter:'freeform vfp - spline dzf[0]', value=0.0892882 +/- 0.0556, bounds=[0.001, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[1]', value=0.158087 +/- 0.0581, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[2]', value=0.0663661 +/- 0.0566, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[3]', value=0.154285 +/- 0.0514, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[4]', value=0.23865 +/- 0.0107, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline dzf[5]', value=0.205942 +/- 0.0587, bounds=[0.01, 0.24285714285714285]
Parameter:'freeform vfp - spline vff[0]', value=0.66936 +/- 0.138, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[1]', value=0.422018 +/- 0.0828, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[2]', value=0.855366 +/- 0.211, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[3]', value=0.355091 +/- 0.138, bounds=[0.01, 1.0]
Parameter:'freeform vfp - spline vff[4]', value=0.161814 +/- 0.0773, bounds=[0.01, 1.0]
Parameter:'solvent - sld', value=6.21449 +/- 0.00274, bounds=[6.0, 6.4]
