Audit reports

we have enabled auditing in the 10g & 11g databases by setting audit_trail=db and following privs are audited by access..
audit alter any table by access;
audit create any table by access;
audit drop any table by access;
audit create any procedure by access;
audit drop any procedure by access;
audit alter any procedure by access;
audit grant any privilege by access;
audit grant any object privilege by access;
audit grant any role by access;
audit audit system by access;
audit create external job by access;
audit create any job by access;
audit create any library by access;
audit create public database link by access;