Fraser                  Fraser River at Hope, mean monthly flow (cms),
                        1912.3-1991.12
ozone                   Ozone concentration, downtown L.A.,
                        1955.1-1972.12
peacf                   Periodic Autocorrelation Function
peacf.plot              periodic correlation plot
pear                    fit a periodic autoregression model
pear-package            Periodic Autoregression Model Fitting
peboxplot               boxplots of a periodic time series
pepacf                  periodic partial autocorrelation function
peplot                  Periodic Correlation Visualization Plot
pepsi                   moving average expansion of a periodic
                        autoregression
