Fit of the solutions of the fractional Lévy motion transport equation to probability density functions as a function of time. For more details see :
Bovet, A., Gamarino, M., Furno, I., Ricci, P., Fasoli, A., Gustafson, K., … Sánchez, R. (2014). Transport equation describing fractional Lévy motion of suprathermal ions in TORPEX. Nuclear Fusion, 54(10), 104009. http://doi.org/10.1088/0029-5515/54/10/104009
depends on the stbl package by Mark Veillette https://github.com/markveillette/stbl