A list with component obs, a data.frame containing the observed
distribution values and pred, a data.frame containing the fitted
values. Both data.frames have columns matrixn, the number of
the matrix for which values are given, type, the fitted type of distribution,
as well as patchsize and y, the patch size and value of the
inverse cumulative distribution function (i.e. \(1 - P(x<k)\)).