diff --git a/lib/Rrd/Temperature.php b/lib/Rrd/Temperature.php
index 7fcb470..290c659 100644
--- a/lib/Rrd/Temperature.php
+++ b/lib/Rrd/Temperature.php
@@ -112,8 +112,8 @@ class Temperature
         $options = [
             '--step', '60', // 1min step
             sprintf('DS:%s:GAUGE:600:0:100', $id), // 10min hartbeat
-            'RRA:LAST:0.5:1:1440',    // last/m   - 1day(1440min)
-            'RRA:LAST:0.5:30:52560',  // last/30m - 3years(365day=30min*17520)*3
+            'RRA:LAST:0.5:1:10080',   // last/m   - 7day(10080min)
+            'RRA:LAST:0.5:30:175200', // last/30m - 10years(365day=30min*17520)*10
         ];
 
         return rrd_create($fpath, $options);