diff --git a/server/index.js b/server/index.js
index 271970a..14712a7 100644
--- a/server/index.js
+++ b/server/index.js
@@ -34,6 +34,62 @@ app.use(function (req, res, next) {
 })
 
 app.get('/type/:type/startDate/:startDate/endDate/:endDate/sample/:sample', async (req, res) => {
+  const startDate = new Date(req.params.startDate * 1000)
+  const endDate = new Date(req.params.endDate * 1000)
+  const sample = parseInt(req.params.sample)
+  // const query = {
+  //   _id: {
+  //     $gt: objectIdFromDate(startDate),
+  //     $lt: objectIdFromDate(endDate)
+  //   },
+  //   type: req.params.type,
+  //   value: {
+  //     $ne: NaN
+  //   }
+  // }
+  const agg = [
+    {
+      $match: {
+        $and: [
+          { _id: { $gt: objectIdFromDate(startDate), $lt: objectIdFromDate(endDate) } },
+          { type: req.params.type },
+          { value: { $ne: NaN } }
+        ]
+      }
+    },
+    {
+      $group: {
+        _id: {
+          $toDate: {
+            $subtract: [
+              { $toLong: { $toDate: '$_id' } },
+              { $mod: [{ $toLong: { $toDate: '$_id' } }, 1000 * 60 * sample] }
+            ]
+          }
+        },
+        value: { $avg: '$value' },
+        // count: { $sum: 1 },
+        date: { $min: { $toDate: '$_id' } }
+      }
+    },
+    {
+      $project: {
+        _id: 0,
+        value: { $round: ['$value', 1] },
+        date: { $toLong: '$date' }
+      }
+    },
+    { $sort: { date: 1 } }
+  ]
+  try {
+    const docs = await db.collection('dht22').aggregate(agg).toArray()
+    res.json(docs)
+  } catch (err) {
+    console.log(err)
+  }
+})
+
+app.get('/v0/type/:type/startDate/:startDate/endDate/:endDate/sample/:sample', async (req, res) => {
   const startDate = new Date(req.params.startDate * 1000)
   const endDate = new Date(req.params.endDate * 1000)
   const sample = parseInt(req.params.sample)
diff --git a/src/components/Chart.vue b/src/components/Chart.vue
index 178976f..c5dfaf9 100644
--- a/src/components/Chart.vue
+++ b/src/components/Chart.vue
@@ -48,7 +48,7 @@ export default {
       }
     }
     const renderChart = () => {
-      const chartData = data.value.map(({ date, value }) => ({ x: date * 1000, y: value }))
+      const chartData = data.value.map(({ date, value }) => ({ x: date, y: value }))
       Highcharts.chart(chart.value, {
         chart: { styledMode: true, marginBottom: 25 },
         title: { text: '' },