Tourism is one of the largest economic components of Hawaii (another is the Pearl Harbor Navy Base). The data (hawaii-new.dat) contains monthly record of the number of tourists visited Hawaii from January, 1970 to December, 1995. The first column shows the year-month. The second column is the total. The third and fourth columns show the number of west-bound (mainly from US and Canada) and east bound (mainly from Japan and Australia) visitors. Perform the following analysis. 1. Draw time series plots of the three series on the same graph, add title, xy axis and legend. Comment on what you observe (trend, seasonality, variance, possible outliers, relationship between the three series and others). 2. Perform a (base 10) log transformation of the total series. Draw a time plot and comment on it. Is there a big difference after the transformation?