diff --git a/sohstationviewer/model/reftek_data/reftek.py b/sohstationviewer/model/reftek_data/reftek.py
index 0bcddc848987de8a5af08afd13d7f74d774dccdd..3648ab192854a42ba90948f8a56c568e1b099afd 100755
--- a/sohstationviewer/model/reftek_data/reftek.py
+++ b/sohstationviewer/model/reftek_data/reftek.py
@@ -2,9 +2,11 @@
 RT130 object to hold and process RefTek data
 """
 from pathlib import Path
+from time import strptime
 from typing import Union, List, Tuple, Dict
 import traceback
 import numpy as np
+from obspy import UTCDateTime
 from obspy.core import Stream
 
 from sohstationviewer.conf import constants
@@ -73,6 +75,7 @@ class RT130(GeneralData):
         if self.creator_thread.isInterruptionRequested():
             raise ThreadStopped()
         self.finalize_data()
+        print(self.mass_pos_data)
 
     def finalize_data(self):
         """
@@ -130,6 +133,33 @@ class RT130(GeneralData):
                 self.log_data[file_key]['SOH'].append(
                     (key_file_count, reader.soh_lines)
                 )
+            self.convert_mass_pos_log_lines_to_data(file_key, reader.masspos_lines)
+
+    def convert_mass_pos_log_lines_to_data(self, current_key, masspos_lines):
+        for masspos_num in range(1, 7):
+            masspos_string = f'MassPos{masspos_num}'
+            current_lines = [line.split()
+                             for line
+                             in masspos_lines
+                             if int(line.split()[2]) == masspos_num]
+            data = np.asarray([line[3] for line in current_lines], dtype=float)
+            time_format = '%Y:%j:%H:%M:%S.%f'
+            times = np.array([UTCDateTime.strptime(line[1] + '000', time_format).timestamp for line in current_lines])
+            if len(data) == 0:
+                continue
+            trace = {}
+            trace['startTmEpoch'] = times[0]
+            trace['endTmEpoch'] = times[-1]
+            trace['data'] = data
+            trace['times'] = times
+            if masspos_string not in self.mass_pos_data[current_key]:
+                self.mass_pos_data[current_key][masspos_string] = {'tracesInfo': [trace]}
+                self.mass_pos_data[current_key][masspos_string]['samplerate'] = 0
+                trace['startTmEpoch'] = times[0]
+                trace['endTmEpoch'] = times[-1]
+            else:
+                self.mass_pos_data[current_key][masspos_string]['tracesInfo'].append(trace)
+                trace['endTmEpoch'] = times[-1]
 
     def read_folders(self) -> None:
         """