This is a copy of the fremantle dataset from the ismev package.
The fremantle data frame has 86 rows and 3 columns. The second column
gives 86 annual maximum sea levels recorded at Fremantle, Western
Australia, within the period 1897 to 1989. The first column gives the
corresponding years. The third column gives annual mean values of the
Southern Oscillation Index (SOI), which is a proxy for meteorological
volatility.