adding 1 to missing hz lower depths

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aqp@805 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
code-cleanup in fetchNASIS

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/aqp@806 edb9625f-4e0d-4859-8d74-9fd3b1da38cb