diff --git a/frontend/src/src/helpers/seismic/getNormalizedData.tsx b/frontend/src/src/helpers/seismic/getNormalizedData.tsx
deleted file mode 100644
index 6f43a130..00000000
--- a/frontend/src/src/helpers/seismic/getNormalizedData.tsx
+++ /dev/null
@@ -1,17 +0,0 @@
-import BigNumber from "bignumber.js";
-
-export const getNormalizedData = (data: number[], center: number) => {
-	const arrSum = data.reduce((sum, val) => {
-		const bigSum = new BigNumber(sum);
-		const bigVal = new BigNumber(val);
-		return bigSum.plus(bigVal).toNumber();
-	});
-
-	const avg = new BigNumber(arrSum).dividedBy(data.length).toNumber();
-	return data.map((item) => {
-		const bigItem = new BigNumber(item);
-		const bigAvg = new BigNumber(avg);
-		const bigCenter = new BigNumber(center);
-		return bigItem.minus(bigAvg).plus(bigCenter).toNumber();
-	});
-};
diff --git a/frontend/src/src/views/History/index.tsx b/frontend/src/src/views/History/index.tsx
index 2af7ebb4..9f42ad37 100644
--- a/frontend/src/src/views/History/index.tsx
+++ b/frontend/src/src/views/History/index.tsx
@@ -23,7 +23,6 @@ import { sendPromiseAlert } from "../../helpers/interact/sendPromiseAlert";
 import { sendUserAlert } from "../../helpers/interact/sendUserAlert";
 import { requestRestApi } from "../../helpers/request/requestRestApi";
 import { FilterPassband, getFilteredCounts } from "../../helpers/seismic/getFilteredCounts";
-import { getNormalizedData } from "../../helpers/seismic/getNormalizedData";
 import { asyncSleep } from "../../helpers/utils/asyncSleep";
 import { CircularQueue2D } from "../../helpers/utils/CircularQueue2D";
 import { getTimeString } from "../../helpers/utils/getTimeString";
@@ -190,15 +189,12 @@ const History = ({ locale }: RouterComponentProps) => {
 					.map((item) => {
 						const timestamp = item[0];
 						const channelData = item.slice(1);
-						const normalizedData = Float32Array.from(
-							getNormalizedData(Array.from(channelData), 0)
-						);
 						if (filterEnabled) {
-							const filteredData = getFilteredCounts(normalizedData, {
+							const filteredData = getFilteredCounts(Float32Array.from(channelData), {
 								poles: 4,
 								lowFreqCorner,
 								highFreqCorner,
-								sampleRate: normalizedData.length,
+								sampleRate: channelData.length,
 								passbandType: FilterPassband.BAND_PASS
 							});
 							return Array.from(filteredData).map((value, index) => [
@@ -206,8 +202,8 @@ const History = ({ locale }: RouterComponentProps) => {
 								value
 							]);
 						}
-						return Array.from(normalizedData).map((value, index) => [
-							timestamp + (1000 / normalizedData.length) * index,
+						return Array.from(channelData).map((value, index) => [
+							timestamp + (1000 / channelData.length) * index,
 							value
 						]);
 					})
diff --git a/frontend/src/src/workers/handleSetCharts.worker.ts b/frontend/src/src/workers/handleSetCharts.worker.ts
index 8056c88f..301a80fd 100644
--- a/frontend/src/src/workers/handleSetCharts.worker.ts
+++ b/frontend/src/src/workers/handleSetCharts.worker.ts
@@ -1,7 +1,6 @@
 import { expose } from "comlink";
 
 import { FilterPassband, getFilteredCounts } from "../helpers/seismic/getFilteredCounts";
-import { getNormalizedData } from "../helpers/seismic/getNormalizedData";
 
 export default {} as typeof Worker & { new (): Worker };
 
@@ -16,7 +15,6 @@ export const api = {
 	) => {
 		const timestamp = bufferData[0];
 		const channelData = Array.from(bufferData).slice(1);
-		// const normalizedData = getNormalizedData(channelData, 0);
 
 		if (filterEnabled) {
 			return Array.from(
@@ -37,9 +35,8 @@ export const api = {
 		for (const data of bufferData) {
 			channelData.push(...Array.from(data).slice(1));
 		}
-		const normalizedData = getNormalizedData(channelData, 0);
-		const max = Math.max(...normalizedData);
-		const min = Math.min(...normalizedData);
+		const max = Math.max(...channelData);
+		const min = Math.min(...channelData);
 		return { max: max.toFixed(0), min: min.toFixed(0) };
 	}
 };