diff --git a/src/Controller/MonitoringApiController.php b/src/Controller/MonitoringApiController.php
index 5d8c075..092d233 100644
--- a/src/Controller/MonitoringApiController.php
+++ b/src/Controller/MonitoringApiController.php
@@ -37,9 +37,15 @@ class MonitoringApiController extends AbstractController
         ];
 
         foreach ($entities as $entity) {
+            $hour = (int) $entity->getDate()->format('H');
             $labels[] = $entity->getDate()->format('H:i');
             $line['data'][] = $entity->getValue();
-            $line2['data'][] = 27;
+
+            if ($hour >= 20 || $hour <= 10) {
+                $line2['data'][] = 23;
+            } else {
+                $line2['data'][] = 27;
+            }
         }
 
         $datasets[] = $line;