BwDrawer.onionoo_url = "https://onionoo.torproject.org/bandwidth?type=relay&contact=adminsys@nos-oignons.net";
 
 BwDrawer.periods = [
-    { id: "3_months", label: L10n.t_3_months },
+    { id: "6_months", label: L10n.t_6_months },
     { id: "1_year", label: L10n.t_1_year },
     { id: "5_years", label: L10n.t_5_years },
   ];
 
 BwDrawer.draw_bandwidth_graph = function(raw_data, selector, period) {
   // Purge non running relays
-  raw_data.relays.forEach(function(r, i) {
-    if (typeof r.read_history === 'undefined' || typeof r.write_history === 'undefined') {
-      raw_data.relays.splice(i, 1);
-    }
+  raw_data.relays = raw_data.relays.filter(function(r) {
+    return typeof r.read_history !== 'undefined' && typeof r.write_history !== 'undefined';
   });
 
+
   var update_period;
 
   var svg = d3.select(selector).append("svg")