Threshold selection for the random block maxima method
thselect.rbm(xdat, kmax = length(xdat))a list with elements
k0: the number of exceedances at the selected threshold
thresh0: the selected threshold, or accordingly the (\(k_0+1\))th order statistic
shape: the RBM shape estimate
[vector] sample exceedances
maximum number of exceedances to consider.