diff --git a/pb_hooks/status.pb.js b/pb_hooks/status.pb.js
index 420b879..60fd29c 100644
--- a/pb_hooks/status.pb.js
+++ b/pb_hooks/status.pb.js
@@ -195,7 +195,8 @@ routerAdd("GET", "/api/status", (e) => {
              // Upstream liveness rides along on the same call rather than a
              // second round trip: it is produced by the same service and read
              // by the same screen.
-             upstreams: stats.upstreams }
+             upstreams: stats.upstreams,
+             throughput: stats.throughput }
   })
 
   return e.json(200, {
diff --git a/pb_public/status.html b/pb_public/status.html
index bd0deb6..97a8a74 100644
--- a/pb_public/status.html
+++ b/pb_public/status.html
@@ -417,6 +417,33 @@ function sinceLabel(unix){
          ("0" + d.getMinutes()).slice(-2);
 }
 
+// Whose bytes were slow. Not a ranking input and deliberately not per file: a
+// stall is a property of neither the upload nor the hostname, because TorBox
+// hands out CDN nodes per request. This exists to answer "was it them or us"
+// for a person looking at a screen, which is the question that took an evening
+// of measurement the first time it was asked.
+function panelThroughput(a){
+  var t = a && a.throughput;
+  if (!t || !t.length) return "";
+  var rows = t.map(function(x){
+    // Mbit/s reads the way a person thinks about a connection; kbps does not.
+    var med = (x.medianKbps / 1000).toFixed(1);
+    var worst = x.worstMinKbps === null ? "—" : (x.worstMinKbps / 1000).toFixed(1);
+    // Time spent waiting is the number that matches what the viewer felt.
+    var stall = x.stalledPct === null ? "—" : x.stalledPct + " %";
+    var bad = x.stalledPct !== null && x.stalledPct >= 2;
+    return "<tr><td><b>" + esc(x.provider) + '</b></td><td class="num">' + x.sessions +
+      '</td><td class="num">' + med + '</td><td class="num">' + worst +
+      '</td><td class="num"' + (bad ? ' style="color:var(--warn)"' : "") + ">" + stall +
+      "</td></tr>";
+  }).join("");
+  return '<section class="wide"><h2>Rychlost zdrojů za 24 h</h2><table>' +
+    '<tr><th>poskytovatel</th><th class="num">relací</th><th class="num">medián Mb/s</th>' +
+    '<th class="num">nejhorší propad</th><th class="num">čekání</th></tr>' + rows +
+    '</table><p class="note">Medián, ne průměr: jedna rychlá relace nemá schovat deset pomalých. ' +
+    "Sloupec čekání je podíl sledovaného času stráveného načítáním.</p></section>";
+}
+
 function panelAccounts(a){
   if (!a || a.error) return "";
   return '<section><h2>Účty</h2><div class="kv">' +
@@ -1191,7 +1218,7 @@ async function load(){
     el("main").innerHTML =
       panelServices(d.coolify) + panelReleases(d.releases) +
       panelClients(d.clients) + panelApi(d.amberApi) + panelAccounts(d.accounts) +
-      panelUpstreams(d.amberApi) +
+      panelUpstreams(d.amberApi) + panelThroughput(d.amberApi) +
       panelErrors(errs);
     wire();
   } catch (e) {