Google charts use different month countings

app/views/status/index.html.erb

@@ -33,7 +33,7 @@
       <% value = stat['value'] %>
       <% value = '0' if !stat['value'] %>
       <% time = Time.at(stat['time']) %>
-      [new Date(<%= time.year %>,<%= time.month %>,<%= time.day %>,<%= time.hour %>,<%= time.min %>),<%= value.gsub('ms', '').gsub('s', '') %>],
+      [new Date(<%= time.year %>,<%= time.month - 1 %>,<%= time.day %>,<%= time.hour %>,<%= time.min %>),<%= value.gsub('ms', '').gsub('s', '') %>],
       <% end %>
     ]);