title: Traceroute average latency
body: <p>While using the UNIX <code>traceroute</code> command, in order to calculate average latency for <strong>each loop</strong> (from one hop to the next one, e.g.: hop 8 to 9) what procedure should we take?</p>
  
  <pre><code>8   146.97.33.6    2.150 ms  2.159 ms  2.133 ms
  9   146.97.33.61   1.580 ms  1.543 ms  1.552 ms
  10  146.97.35.170  1.544 ms  1.535 ms  1.526 ms
  </code></pre>
  
  <p>I am aware, for instance, the average latency for hop 9, is 1.5583:</p>
  
  <pre><code>1.580 ms+1.543 ms+1.552 ms / 3
  </code></pre>
  
  <p>However, is this the average time it takes from the <strong>local host</strong> to that particular <strong>hop</strong>, <em>or</em> is it the time it takes for data packets to travel from <strong>previous</strong> hop to the particular <strong>hop</strong>?</p>