diff --git a/src/pages/overall/overall-line/overall-line.ts b/src/pages/overall/overall-line/overall-line.ts
index 410e9f1..7ae58c0 100644
--- a/src/pages/overall/overall-line/overall-line.ts
+++ b/src/pages/overall/overall-line/overall-line.ts
@@ -48,12 +48,7 @@ export default class OverallLine extends Vue
                 type: 'inside'
             }
         ],
-        series:
-        {
-            smooth: true,
-            markLine: GraphUtils.getTermLines(),
-            markArea: GraphUtils.getGradeMarkAreas(0.09)
-        },
+        series: this.series(),
         xAxis:
         {
             type: 'time'
@@ -65,6 +60,18 @@ export default class OverallLine extends Vue
         }
     };
 
+    /**
+     * Generate series data
+     */
+    private series()
+    {
+        // Each course
+        // todo: filter graded
+        let series: any[] = this.courses.map(course => this.getCourseSeries(course));
+
+        return series
+    }
+
     /**
      * Generate series data for a course
      *