--- a/stop.php
+++ b/stop.php
@@ -141,6 +141,30 @@
 if (sizeof($trips) == 0) {
     echo "<li style='text-align: center;'>No trips in the near future.</li>";
 } else {
+            if (isset($labs)) {
+// ETA calculation
+                
+                $tripETA = Array();
+                // max/min delay instead of stddev?
+                $query = $query = "select 'lol', avg(timing_delta), stddev(timing_delta), count(*) from myway_timingdeltas where extract(hour from time) between ".date("H", $earlierTime)." and ".date("H", $laterTime);
+       //select 'lol', stop_id,extract(hour from time), avg(timing_delta), stddev(timing_delta), count(*) from myway_timingdeltas where stop_id = '5501' group by stop_id, extract(hour from time) order by extract(hour from time)
+                $query = $conn->prepare($query);
+    $query->execute();
+    if (!$query) {
+        databaseError($conn->errorInfo());
+        return Array();
+    }
+    $ETAparams = Array();
+    foreach ($query->fetchAll() as $row) {
+        $ETAparams[$row[0]] = Array("avg"=> $row[1], "stddev"=>floor($row[2]),"count"=>$row[3]);
+    };
+    //print_r($ETAparams);
+    foreach ($trips as $trip) {
+        $tripETA[$trip['trip_id']] = date("H:i",strtotime($trip['arrival_time']." - ".(floor($ETAparams['lol']['stddev']))." seconds"))." to ".
+        date("H:i",strtotime($trip['arrival_time']." + ".(floor($ETAparams['lol']['stddev']))." seconds"));
+    }
+    //print_r($tripETA);
+}
     foreach ($trips as $trip) {
         if (
                 isset($filterHasStop) && (getTripHasStop($trip['trip_id'], $filterHasStop) == 1)
@@ -152,6 +176,9 @@
             $destination = getTripDestination($trip['trip_id']);
             echo '<a href="trip.php?stopid=' . $stopid . '&amp;tripid=' . $trip['trip_id'] . '"><h3>' . $trip['route_short_name'] . " towards " . $destination['stop_name'] . "</h3><p>";
             $viaPoints = viaPointNames($trip['trip_id'], $trip['stop_sequence']);
+if (isset($labs)) {
+                echo '<br><span class="eta">ETA: ' . $tripETA[$trip['trip_id']] . '</span>';
+            }
             if ($viaPoints != "")
                 echo '<br><span class="viaPoints">Via: ' . $viaPoints . '</span>';
             if (sizeof($tripStopNumbers) > 0) {