– For high rigidities, it is shown that both QLT and SOQLT
severely underestimate 90◦ scattering, even though SOQLT
was designed explicitly to remedy this shortcoming of previous,
quasi-linear results. Accordingly, the chi-square test
yields slightly higher values of χ2 = 13.55 and 14.05 at
R = 1 for QLT and SOQLT, respectively, which again shows
that QLT agrees slightly better with the numerical values.