diff --git a/tm/OBSW_TmService3.py b/tm/OBSW_TmService3.py
index 9a146535ebe0290dff7410bdee672d1776e56824..fbc1b1225ecee6731a522c203f30da5d30b02ee2 100644
--- a/tm/OBSW_TmService3.py
+++ b/tm/OBSW_TmService3.py
@@ -65,17 +65,17 @@ class Service3TM(PUSTelemetry):
                              "Velocity X", "Velocity Y", "Velocity Z"]
             fixMode = self.byteArrayData[4]
             svInFix = self.byteArrayData[5]
-            gnssWeek = struct.unpack('>H', self.byteArrayData[5:7])[0]
-            timeOfWeek = struct.unpack('>I', self.byteArrayData[7:11])[0]
-            latitude = struct.unpack('>I', self.byteArrayData[11:15])[0]
-            longitude = struct.unpack('>I', self.byteArrayData[15:19])[0]
-            msa = struct.unpack('>I', self.byteArrayData[19:23])[0]
-            positionX = struct.unpack('>d', self.byteArrayData[23:31])[0]
-            positionY = struct.unpack('>d', self.byteArrayData[31:39])[0]
-            positionZ = struct.unpack('>d', self.byteArrayData[39:47])[0]
-            vx = struct.unpack('>d', self.byteArrayData[47:55])[0]
-            vy = struct.unpack('>d', self.byteArrayData[55:63])[0]
-            vz = struct.unpack('>d', self.byteArrayData[63:71])[0]
+            gnssWeek = struct.unpack('>H', self.byteArrayData[6:8])[0]
+            timeOfWeek = struct.unpack('>I', self.byteArrayData[8:12])[0]
+            latitude = struct.unpack('>I', self.byteArrayData[12:16])[0]
+            longitude = struct.unpack('>I', self.byteArrayData[16:20])[0]
+            msa = struct.unpack('>I', self.byteArrayData[20:24])[0]
+            positionX = struct.unpack('>d', self.byteArrayData[24:32])[0]
+            positionY = struct.unpack('>d', self.byteArrayData[32:40])[0]
+            positionZ = struct.unpack('>d', self.byteArrayData[40:48])[0]
+            vx = struct.unpack('>d', self.byteArrayData[48:56])[0]
+            vy = struct.unpack('>d', self.byteArrayData[56:64])[0]
+            vz = struct.unpack('>d', self.byteArrayData[64:72])[0]
             self.hkContent = [fixMode, svInFix, gnssWeek, timeOfWeek, latitude, longitude, msa, positionX, positionY,
                               positionZ, vx, vy, vz]
         elif self.sid == 0x4300 or self.sid == 0x4400: