diff --git a/src/app/components/shared/list-statistic/list-statistic.component.html b/src/app/components/shared/list-statistic/list-statistic.component.html
index 09912ff275e670f4a263ae2f989612cb34e4dd0c..e6f008d9243494e51a088050ea15b2544169f181 100644
--- a/src/app/components/shared/list-statistic/list-statistic.component.html
+++ b/src/app/components/shared/list-statistic/list-statistic.component.html
@@ -1,25 +1,25 @@
 <mat-toolbar></mat-toolbar>
 <mat-progress-bar class="progress-theme" mode="determinate" value="{{total}}"
-                  *ngIf="total > 85" color="primary"></mat-progress-bar>
+                  *ngIf="total > statusGood" color="primary"></mat-progress-bar>
 <mat-progress-bar class="progress-theme" mode="determinate" value="{{total}}"
-                  *ngIf="total < 85 && total > 49" color="accent"></mat-progress-bar>
+                  *ngIf="total < statusGood && total >= statusOkay" color="accent"></mat-progress-bar>
 <mat-progress-bar class="progress-theme" mode="determinate" value="{{total}}"
-                  *ngIf="total < 49" color="warn"></mat-progress-bar>
+                  *ngIf="total < statusOkay && total > statusEmpty" color="warn"></mat-progress-bar>
 <mat-toolbar></mat-toolbar>
 <table mat-table [dataSource]="dataSource" class="mat-elevation-z8">
 
   <ng-container matColumnDef="content">
     <mat-header-cell *matHeaderCellDef> Content </mat-header-cell>
-    <mat-cell *matCellDef="let cp" [ngClass]="{'positiveC' : cp.percent > 85,
-      'okayC' : cp.percent > 49 && cp.percent < 85, 'negativeC' : cp.percent < 50,
-      'emptyCC' : cp.percent < 0 }">{{cp.content.subject}}</mat-cell>
+    <mat-cell *matCellDef="let cp" [ngClass]="{'positiveC' : cp.percent > statusGood,
+      'okayC' : cp.percent >= statusOkay && cp.percent < statusGood, 'negativeC' : cp.percent < statusOkay,
+      'emptyCC' : cp.percent < statusZero }">{{cp.content.subject}}</mat-cell>
   </ng-container>
 
   <ng-container matColumnDef="percentage">
     <mat-header-cell *matHeaderCellDef> Percentage </mat-header-cell>
-    <mat-cell *matCellDef="let cp" [ngClass]="{'positiveC' : cp.percent > 85,
-      'okayC' : cp.percent > 49 && cp.percent < 85, 'negativeC' : cp.percent < 50,
-      'emptyC' : cp.percent < 0 }">{{cp.percent.toFixed() + ' %'}}</mat-cell>
+    <mat-cell *matCellDef="let cp" [ngClass]="{'positiveC' : cp.percent > statusGood,
+      'okayC' : cp.percent >= statusOkay && cp.percent < statusGood, 'negativeC' : cp.percent < statusOkay,
+      'emptyC' : cp.percent < statusZero }">{{cp.percent.toFixed() + ' %'}}</mat-cell>
   </ng-container>
 
   <mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
diff --git a/src/app/components/shared/list-statistic/list-statistic.component.ts b/src/app/components/shared/list-statistic/list-statistic.component.ts
index 63bf4ebdb9b4be7d030065b2f8634e116222c477..dcb90044c7be5d05df74c267f8f117d9ac276fcd 100644
--- a/src/app/components/shared/list-statistic/list-statistic.component.ts
+++ b/src/app/components/shared/list-statistic/list-statistic.component.ts
@@ -25,6 +25,10 @@ export class ListStatisticComponent implements OnInit {
   @Input() contentGroup: ContentGroup;
   contents: Content[] = [];
   displayedColumns = ['content', 'percentage'];
+  statusGood = 85;
+  statusOkay = 50;
+  statusEmpty = -1;
+  statusZero = 0;
   dataSource: ContentPercents[];
   total = 0;
   totalP = 0;
@@ -56,6 +60,8 @@ export class ListStatisticComponent implements OnInit {
             console.log(percent);
             this.totalP += percent;
             this.total = this.totalP / this.contentCounter;
+          } else {
+            this.total = -1;
           }
         });
       } else {
@@ -68,7 +74,7 @@ export class ListStatisticComponent implements OnInit {
     this.correctCounts = 0;
     this.totalCounts = 0;
     const length = options.length;
-    let correctIndex = new Array<number>();
+    const correctIndex = new Array<number>();
     let res: number;
     if (multiple) {
       let cic = 0;
@@ -79,7 +85,7 @@ export class ListStatisticComponent implements OnInit {
           cic++;
         }
       }
-      let corrects = new Array<number>();
+      const corrects = new Array<number>();
       for (let i = 0; i < length; i++) {
         if (correctIndex.includes(i)) {
           corrects[cac] = indCounts[i];