diff --git a/sohstationviewer/model/reftek_data/reftek.py b/sohstationviewer/model/reftek_data/reftek.py
index 1083686385deec4b2b68bc2d0482df0088d91d20..67333865f8185bb253b98c8bbb85c0951a3ce6ce 100755
--- a/sohstationviewer/model/reftek_data/reftek.py
+++ b/sohstationviewer/model/reftek_data/reftek.py
@@ -29,7 +29,7 @@ from sohstationviewer.model.reftek_data.reftek_reader import core, soh_packet
 from sohstationviewer.model.reftek_data.log_info import LogInfo
 
 
-def format_timestamp_as_mass_pos_time(timestamp: float) -> str:
+def format_timestamp_as_mass_pos_time (timestamp: float) -> str:
     """
     Format a UTC timestamp in the format of a mass-position time in SOH
     messages.
@@ -377,8 +377,8 @@ class RT130(GeneralData):
         cur_key = (rt130._data[0]['unit_id'].decode(),
                    f"{rt130._data[0]['experiment_number']}")
         self.populate_cur_key_for_all_data(cur_key)
-
-        self.get_ehet_in_log_data(rt130, cur_key)
+        if data_stream != 9:
+            self.get_ehet_in_log_data(rt130, cur_key)
         self.get_mass_pos_data_and_waveform_data(rt130, data_stream, cur_key)
 
     def get_ehet_in_log_data(self, rt130: core.Reftek130,