The Sea Surface Temperature (SST) data:

The SST data is in SST.txt, which is an ascii file. The data of each month
starts with a line of 2 numbers: the year and the month. Then the monthly
data (4 degree longitude by 4 degree latitude, 210 numbers/month) are
written 10 numbers a line; the first number is for the grid (lon=152,
lat=-12), the second number is for the grid (lon=156, lat=-12), ..., the
last number is for the grid (lon=268, lat=12).

Time: Jan 1950 to Dec 1998
longitude:
   152   156   160   164   168   172   176   180   184   188   192   196
   200   204   208   212   216   220   224   228   232   236   240   244
   248   252   256   260   264   268
Latitude:
   -12    -8    -4     0     4     8    12
	 
The Sea Level Pressure (SLP) data:

The SLP data is in SLP.txt, which is an ascii file. The data of each month
starts with a line of 2 numbers: the year and the month. Then the monthly
data (10 degree longitude by 4 degree latitude, 84 numbers/month) are
written 10 numbers a line; the first number is for the grid (lon=155,
lat=-12), the second number is for the grid (lon=165, lat=-12), ..., the
last number is for the grid (lon=268, lat=12).

Time: Jan 1950 to Dec 1998
longitude:
   155   165   175   185   195   205   215   225   235   245   255   265
Latitude:
   -12    -8    -4     0     4     8    12	 
	 
	 
Both the SST and SLP data contain the climatological cycle and may contain
long-term trends.