caveat

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@38846 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.sun/r.sun.html

@@ -178,7 +178,7 @@ Open Source GIS: A GRASS GIS Approach (published in Kluwer Academic Publishers
 in 2002). </p>
 <p>
 Average monthly values of the Linke turbidity coefficient for a mild climate
-(see reference literature for your study area): </p>
+in the northern hemisphere (see reference literature for your study area): </p>
 <pre>
 Month&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Jan&nbsp; Feb&nbsp; Mar&nbsp; Apr&nbsp; May&nbsp; Jun&nbsp; Jul&nbsp; Aug&nbsp; Sep&nbsp; Oct&nbsp; Nov&nbsp; Dec&nbsp; annual<br>
 mountains&nbsp; 1.5&nbsp; 1.6&nbsp; 1.8&nbsp; 1.9&nbsp; 2.0&nbsp; 2.3&nbsp; 2.3&nbsp; 2.3&nbsp; 2.1&nbsp; 1.8&nbsp; 1.6&nbsp; 1.5&nbsp; 1.90&nbsp;&nbsp;<br>