diff --git a/open_earable/lib/sensor_data_tab/sensor_chart.dart b/open_earable/lib/sensor_data_tab/sensor_chart.dart
index de37740..1b80915 100644
--- a/open_earable/lib/sensor_data_tab/sensor_chart.dart
+++ b/open_earable/lib/sensor_data_tab/sensor_chart.dart
@@ -34,6 +34,13 @@ class _EarableDataChartState extends State<EarableDataChart> {
   late SimpleKalman kalmanX, kalmanY, kalmanZ;
   late String _sensorName;
   int _numDatapoints = 200;
+  Map<String, String> _units = {
+    "Accelerometer": "m/s\u00B2",
+    "Gyroscope": "°/s",
+    "Magnetometer": "µT",
+    "Pressure": "Pa",
+    "Temperature": "°C"
+  };
   _setupListeners() {
     if (_title == "Pressure" || _title == "Temperature") {
       _dataSubscription =
@@ -168,7 +175,7 @@ class _EarableDataChartState extends State<EarableDataChart> {
     if (_title == 'Pressure' || _title == 'Temperature') {
       seriesList = [
         charts.Series<SensorData, int>(
-          id: '$_title${_data.isNotEmpty ? " (${_data[0].units[_title]})" : ""}',
+          id: '$_title${_data.isNotEmpty ? " (${_units[_title]})" : ""}',
           colorFn: (_, __) => charts.Color.fromHex(code: colors[0]),
           domainFn: (SensorData data, _) => data.timestamp,
           measureFn: (SensorData data, _) => data.values[0],
@@ -178,21 +185,21 @@ class _EarableDataChartState extends State<EarableDataChart> {
     } else {
       seriesList = [
         charts.Series<SensorData, int>(
-          id: 'X${_data.isNotEmpty ? " (${_data[0].units['X']})" : ""}',
+          id: 'X${_data.isNotEmpty ? " (${_units[_title]})" : ""}',
           colorFn: (_, __) => charts.Color.fromHex(code: colors[0]),
           domainFn: (SensorData data, _) => data.timestamp,
           measureFn: (SensorData data, _) => data.values[0],
           data: _data,
         ),
         charts.Series<SensorData, int>(
-          id: 'Y${_data.isNotEmpty ? " (${_data[0].units['Y']})" : ""}',
+          id: 'Y${_data.isNotEmpty ? " (${_units[_title]})" : ""}',
           colorFn: (_, __) => charts.Color.fromHex(code: colors[1]),
           domainFn: (SensorData data, _) => data.timestamp,
           measureFn: (SensorData data, _) => data.values[1],
           data: _data,
         ),
         charts.Series<SensorData, int>(
-          id: 'Z${_data.isNotEmpty ? " (${_data[0].units['Z']})" : ""}',
+          id: 'Z${_data.isNotEmpty ? " (${_units[_title]})" : ""}',
           colorFn: (_, __) => charts.Color.fromHex(code: colors[2]),
           domainFn: (SensorData data, _) => data.timestamp,
           measureFn: (SensorData data, _) => data.values[2],