diff --git a/src/DataManipulator.ts b/src/DataManipulator.ts
index 7f622955cc..f7b7d938ed 100644
--- a/src/DataManipulator.ts
+++ b/src/DataManipulator.ts
@@ -1,19 +1,32 @@
 import { ServerRespond } from './DataStreamer';
 
 export interface Row {
-  stock: string,
-  top_ask_price: number,
-  timestamp: Date,
+  price_abc:number,
+  price_def:number,
+  ratio:number;
+  timestamp:Date,
+  upper_bound:number,
+  lower_bound:number,
+  trigger_alert:number | undefined,
 }
 
 
 export class DataManipulator {
-  static generateRow(serverResponds: ServerRespond[]) {
-    return serverResponds.map((el: any) => {
-      return {
-        stock: el.stock,
-        top_ask_price: el.top_ask && el.top_ask.price || 0,
-        timestamp: el.timestamp,
+  static generateRow(serverResponds: ServerRespond[]):Row {
+    const priceABC: (serverRespond[0].top_ask_price + serverRespond[0].top_bid_price)/2;
+    const priceDEF: (serverRespond[1].top_ask_price + serverRespond[1].top_bid_price)/2;
+    const ratio:priceABC/priceDEF;
+    const upperBound:1+0.05;
+    const lowerBOund:1-0.05;
+    return {
+        price_abc:priceABC,
+        price_def:priceDEF,
+        ratio,
+        timestamp:serverResponse[0].timestamp > serverRespond[1].timestamp ?
+          serverRespond[0].timestamp : serverRespond[1].timestamp
+        upper_bound :upperBound,
+        lower_bound :lowerBound,
+        trigger_alert :(ratio>upperBound || ratio<lowerBound) ? ratio :undefined
       };
     })
   }
diff --git a/src/Graph.tsx b/src/Graph.tsx
index 277797d933..216884ff34 100644
--- a/src/Graph.tsx
+++ b/src/Graph.tsx
@@ -23,10 +23,13 @@ class Graph extends Component<IProps, {}> {
     const elem = document.getElementsByTagName('perspective-viewer')[0] as unknown as PerspectiveViewerElement;
 
     const schema = {
-      stock: 'string',
-      top_ask_price: 'float',
-      top_bid_price: 'float',
-      timestamp: 'date',
+      price_abc: 'float',
+      price_def: 'float',
+      ratio: 'float',
+      timestamp:'date',
+      upper_bound:'float',
+      lower_bound:'float',
+      trigger_alert:'float',
     };
 
     if (window.perspective && window.perspective.worker()) {
@@ -36,22 +39,25 @@ class Graph extends Component<IProps, {}> {
       // Load the `table` in the `<perspective-viewer>` DOM reference.
       elem.load(this.table);
       elem.setAttribute('view', 'y_line');
-      elem.setAttribute('column-pivots', '["stock"]');
       elem.setAttribute('row-pivots', '["timestamp"]');
-      elem.setAttribute('columns', '["top_ask_price"]');
+      elem.setAttribute('columns', '["ratio","lower_bound"]');
       elem.setAttribute('aggregates', JSON.stringify({
-        stock: 'distinctcount',
-        top_ask_price: 'avg',
-        top_bid_price: 'avg',
+        price_abc:'avg',
+        price_def:'avg',
+        ratio:'avg',
         timestamp: 'distinct count',
+        upper_bound:'avg'
+        lower_bound:'avg',
+        trigger_alert:'avg',        
       }));
     }
   }
 
   componentDidUpdate() {
     if (this.table) {
-      this.table.update(
+      this.table.update([
         DataManipulator.generateRow(this.props.data),
+       ] as unknown as TableData
       );
     }
   }