HOURLYIEAST.* contains the hourly insolation values for each latitude and
longitude pair in the file.  The number in the name is the year and day of the
year.  For example, 2002157 is day 157 for the year 2002.

INSOLEAST.* contains the daily solar insolation values for each latitude and
longitude pair in the file.  The number in the name is the year and day of the
year.

The data in the HOURLYIEAST.* files are as follows:

Latitude, West Longitude, hourly insolations 

where the numbers on the top row of the file are the times of the insolation.  
For example, 1215 is 12:15Z.  All insolations are in W m**-2 for this file.

For the files INSOLEAST.*, the first column contains the daily integrated solar
insolation.  These values must be divided by 100 to get the value in the units
MegaJoules day**-1 m**-2.  The second column is the latitude and the third
column is west longitude.
