cuando retorna vacio, no insertar las lat y long

src/StatsBundle/Command/StatsOnuCommand.php

@@ -91,8 +91,8 @@ class StatsOnuCommand extends BaseCommand
             $row['uptime'] = "NULL";
             $row['update'] = "'".date("Y-m-d H:i:s")."'";
             
-            $row['lat'] = $lat;
-            $row['lng'] = $lng;
+            $row['lat'] = ($lat)?$lat:"NULL";
+            $row['lng'] = ($lng)?$lng:"NULL";
 
             $data[] = "(".implode(",",$row).")".PHP_EOL;
         }