diff --git a/Software/Monitoring/Monitoring.py b/Software/Monitoring/Monitoring.py
index e84b4a9..11430a7 100644
--- a/Software/Monitoring/Monitoring.py
+++ b/Software/Monitoring/Monitoring.py
@@ -4,6 +4,9 @@
 
 Description:
 Monitoring of the environmental variables.
+Temperature, relative humidity, and dew point are measured at regular time intervals and are saved into one or several text files.
+When the maximum number of measurements per text file is reached, a new text file is opened.
+The text files are saved in "/disk/groups/hep/flionett/TestStand/Data/<sensor>/Monitoring according to the name "Monitoring-<date>-<n>.dat", with <n> determined according to the number of rows and the maximum number of rows.
 
 Parameters:
 - <sensor>, the type of sensor;
@@ -17,7 +20,9 @@
 """
 
 import argparse
+import math
 import os
+import re
 import serial
 import sys
 import time
@@ -49,6 +54,7 @@
 wait = 5
 
 # Variables to be monitored.
+reading = []
 T = -1.
 RH = -1.
 DP = -1.
@@ -74,24 +80,11 @@
     print "Serial port listening."
     print "================================================================================================"
 
-    # ser.write('GO\r')
-    # command = ser.read(2)
-    # print "Sending the command...", command
-
-    '''
-    trash = ser.read(3)
-    H = ser.read(5)
-    percent = ser.read(1) # Read the % symbol.
-    trash = ser.read(4)
-    T = ser.read(5)
-    degrees = ser.read(1)
-    print H
-    print percent
-    print T
-    print degrees
-    print "Relative humidity...", H, percent
-    print "Temperature...", T, degrees
-    '''
+    ser.write('MOD=H\r')
+    while True :
+        trash = ser.read(1)
+        if (trash == '\r') :
+            break
 
     # Loop until the user presses Ctrl+C...
     try :
@@ -101,24 +94,40 @@
             # Read current time.
             currentTime = time.ctime()
             # Reset.
+            reading = []
             T = -1.
             RH = -1.
             DP = -1.
             # Measure.
             ser.write('GET\r')
-            command = ser.read(4)
-            # print "Sending the command...", command
-            trash1 = ser.read(2)
+            while True :
+                trash = ser.read(1)
+                if (trash == '\r') :
+                    break
+    
+            while True :
+                byte = ser.read(1)
+                if (byte != '\r') :
+                    reading.append(byte)
+                else :
+                    trash = ser.read(1)
+                    break
+            # print reading
+        
+            # Manipulate the list and extract the desired information.
+            reading.remove('\n')
+            # print reading
+            s = ''.join(reading)
+            # print s
+            l = re.findall(r"[-+]?\d*\.\d+",s)
             # Relative humidity (RH).
-            RH = ser.read(5)
-            percent = ser.read(1) # Read the % symbol.
-            trash2 = ser.read(4)
+            RH = float(l[0])
             # Temperature (T).
-            T = ser.read(5)
-            degrees = ser.read(1)
-            trash3 = ser.read(4)
+            T = float(l[1])
             # Dew point (DP).
-            DP = -1
+            H = (math.log10(RH)-2)/0.4343 + (17.62*T)/(243.12+T)
+            DP = 243.12*H/(17.62-H)
+
             # Write row in the output text file.
             if (nRows%maxNRows==0) :
                 # Close previous output text file, if exists.
@@ -145,24 +154,11 @@
                 file.write(header)
                 nFiles = nFiles+1
 
-            '''
-            print RH
-            print percent
-            print T
-            print degrees
-            print "Relative humidity...", RH, percent
-            print "Temperature...", T, degrees
-            print "Dew point...", DP, degrees
-            '''
-
-            row = currentTime + " " + str(T) + " " + str(RH) + " " + str(DP) + "\n"
+            row = currentTime + " " + "%.2f" % T + " " + "%.2f" % RH + " " + "%.2f" % DP + "\n"
             print row
             file.write(row)
             nRows = nRows+1
     except KeyboardInterrupt :
-        # ser.write('S')
-        # command = ser.read(1)
-        # print "Sending the command...", command
         sys.exit(0)
 
     # Close output text file.