find.ice                minimum of information criteria aic or bic 
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 
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 
var.periodic.correlation
                        variance of the periodic autocorrelations 
