calc_logReturnPeriod_fevd
                        Calculates log return period and standard error
                        given return value(s) of interest
calc_logReturnProbDiff_fevd
                        Calculates log return probability difference
                        for two sets of covariates and standard error
                        of difference given return value(s) of interest
calc_logReturnProb_fevd
                        Calculates log return probability and standard
                        error given return value(s) of interest
calc_returnValueDiff_fevd
                        Calculates return value difference for two sets
                        of covariates and standard error of difference
                        given return period(s) of interest
calc_returnValue_fevd   Calculates return value and standard error
                        given return period(s) of interest
calc_riskRatio_binom    Compute risk ratio and uncertainty based on
                        binomial models for counts of events relative
                        to possible number of events
calc_riskRatio_gev      Compute risk ratio and uncertainty based on
                        generalized extreme value model fit to block
                        maxima or minima
calc_riskRatio_pot      Compute risk ratio and uncertainty based on
                        peaks-over-threshold models fit to exceedances
                        over a threshold
fit_gev                 Fit a generalized extreme value model to block
                        maxima or minima
fit_pot                 Fit a peaks-over-threshold model to exceedances
                        over a threshold
normalize               Normalize a vector
remove_runs             Remove consecutive exceedances from a vector
screen_within_block     Remove multiple exceedances within
                        non-overlapping blocks of fixed length
