diff --git a/index.html b/index.html
index 38e45611d..9e593f1b3 100644
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+++ b/index.html
@@ -423,7 +423,8 @@ <h1>ClickBench — a Benchmark For Analytical DBMS</h1>
                 System &amp; Machine
             </th>
             <th colspan="2">
-                Relative <span id="time-or-size">time</span> (lower is better)
+                Relative <span id="time-or-size">time</span> (lower is better).<br>
+                <span style="font-weight: normal;">Different shades of brown represent the same value at different scales (1x, 10x, 100x zoom).</span>
             </th>
         </tr>
     </thead>