diff --git a/public/dashboard/index.html b/public/dashboard/index.html
index 605bfda..e9af82b 100644
--- a/public/dashboard/index.html
+++ b/public/dashboard/index.html
@@ -514,7 +514,16 @@
                 var option4;
 
                 option4 = {
-                    tooltip:{},
+                    tooltip:{
+                        trigger: 'axis',
+                        formatter: function (params) {
+                          let tooltipContent = '';
+                          params.forEach((param) => {
+                            tooltipContent += `${param.seriesName}: ${param.value}`;
+                          });
+                          return tooltipContent;
+                        },
+                    },
                     color: ['#018fff'],
                     lineStyle: {
                         color: '#018fff'