N-year return levels, median and mean estimate
gev.Nyr(par, nobs, N, type = c("retlev", "median", "mean"), p = 1/N)
a list with components
est point estimate
var variance estimate based on delta-method
type statistic
vector of location, scale and shape parameters for the GEV distribution
integer number of observation on which the fit is based
integer number of observations for return level. See Details
string indicating the statistic to be calculated (can be abbreviated).
probability indicating the return level, corresponding to the quantile at 1-1/p
If there are \(n_y\) observations per year, the L
-year return level is obtained by taking
N
equal to \(n_yL\).