Index: lams_tool_doku/web/pages/monitoring/summary.jsp
===================================================================
diff -u -rb7b939abee8b76394e515ad32a6d3096ac501639 -rfc79f9fc1b671f5e2d182b387be8c3987ba73fb3
--- lams_tool_doku/web/pages/monitoring/summary.jsp	(.../summary.jsp)	(revision b7b939abee8b76394e515ad32a6d3096ac501639)
+++ lams_tool_doku/web/pages/monitoring/summary.jsp	(.../summary.jsp)	(revision fc79f9fc1b671f5e2d182b387be8c3987ba73fb3)
@@ -305,7 +305,7 @@
 							rows += '</td>';
 
 							rows += '<td>';
-							rows += 	userData['mark'];
+							rows += 	(userData['mark'] == '' ? '0.0' : userData['mark']);
 							rows += '</td>';
 
 							rows += '</tr>';