This section of the CD-ROM contains additional material supporting the information in 

Chapter 8: 
Models of Diffuse Solar Fraction

of the book:  
Modeling Solar Radiation at the Earth's Surface.
Recent Advances

published by Springer-Verlag, Heidelberg

November 2007
-------------------------------------

This directory contains

The Excel files, with programs written in Visual Basic (VB), for algorithms described in the chapter.  
Note that to use these programs, you may need to activate VB after opening Excel.  
To do this (or check to see if it is activated), got to the Tools menu, and Add-ins.  
Check to see if the box for Analysis Toolpak (VBA) has been ticked  if not, do so.  
The algorithms include 
1. diffuse modelling,
2. daily profile.
