diff --git a/ISCamRecorder/SensorData.cs b/ISCamRecorder/SensorData.cs
index 0fb31bd..1285ea6 100644
--- a/ISCamRecorder/SensorData.cs
+++ b/ISCamRecorder/SensorData.cs
@@ -213,7 +213,7 @@
                     var reverseBlood = _IsReverseBlood ? 1 : 0;
                     _CsvWriter.WriteLine(
                         $"{dt.ToString("yyyy/MM/dd,HH:mm:ss.fff")},{elapsed:0.00}" +
-                        $",{values[0]},{values[1]},{values[2]},{values[3]},{buttonState},{reverseBlood}");
+                        $",{values[0]},{values[1]},{values[2]},{values[3]},{sat},{buttonState},{reverseBlood}");
                 }
 
                 _Fps.Shot();
@@ -235,7 +235,7 @@
             var sensorFile = Path.Combine(_MF.OutputDir, $"Sensor_{_MF.RecodingTimeStr}.csv");
             _CsvWriter = new StreamWriter(sensorFile);
             if (_CsvWriter != null) {
-                _CsvWriter.WriteLine($"Date,Time,elapsed,B,R,G,IR,switch,Reverse Blood");
+                _CsvWriter.WriteLine($"Date,Time,elapsed,B,R,G,IR,Sat,Switch,ReverseBlood");
             }
             _MF.SensorChart.Invoke((MethodInvoker)delegate {
                 _MF.SensorChart.Annotations["AnnReverseBlood"].Visible = true;