ilt, DHI, GHI, SunZen)
%% References
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%
%% See Also 
% <pvl_perez_help.html |pvl_perez|>,
% <pvl_reindl1990_help.html |pvl_reindl1990|>, 
% <pvl_klucher1979_help.html |pvl_klucher1979|>, 
% <pvl_haydavies1980_help.html |pvl_haydavies1980|>, 
% <pvl_grounddiffuse_help.html |pvl_grounddiffuse|>, 
% <pvl_ephemeris_help.html |pvl_ephemeris|>   
%
%%
% Copyright 2012 Sandia National Laboratories

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