Author: Matthias Hoelzer
	hoelzer@physik.uni-wuerzburg.de


The calculation of the daylight distribution has been taken from the programm
"sunclock". sunclock was written by:

John Mackin, John Walker

The algorithm can be found in:

"Astronomical  Formulae for Calculators" by Jean Meeus, Third Edition,
Richmond: Willmann-Bell, 1985.  This book can be obtained from:

Willmann-Bell
P.O. Box 35025
Richmond, VA  23235
USA
Phone: (804) 320-7016
