Figure 2.

The normalized marginal distribution g(α). The histogram describes the probability to find a given value of the anomalous diffusion coefficient α and is based on the experimental data of fig. 2(c) in [8]. The solid line shows the distribution of equation (2.5) with equations (2.12) and (2.13): $a_{\hspace{0.17em}0}/c=6.5\hspace{0.17em}\hspace{0.17em}{\mathrm{m}}^{-2}$ and $a_1\hspace{0.17em}{\beta }_0/c=-2.03\hspace{0.17em}\hspace{0.17em}{\mathrm{m}}^{-2}$.