Implement format check for Q330 GPS status

sohstationviewer/model/mseed/mseed.py

@@ -309,3 +309,41 @@ class MSeed(DataTypeModel):
                         f'Read {count} waveform files', LogType.INFO)
 
         sortData(self.waveformData)
+
+    @staticmethod
+    def check_q330_gps_status_format(gps_status_lines: List[str]):
+        if gps_status_lines[12].lower() != 'pll status':
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'PLL status does not follow GPS status.'
+            )
+        if 'fix type' not in gps_status_lines[3].lower():
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'Fix type is not at expected position.'
+            )
+        if 'height' not in gps_status_lines[4].lower():
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'Height is not at expected position.'
+            )
+        if 'latitude' not in gps_status_lines[5].lower():
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'Latitude is not at expected position.'
+            )
+        if 'longitude' not in gps_status_lines[6].lower():
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'Longitude is not at expected position.'
+            )
+        if 'sat. used' not in gps_status_lines[8].lower():
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'Sat. Used is not at expected position.'
+            )
+        if 'last gps timemark' not in gps_status_lines[11].lower():
+            raise ValueError(
+                'Q330 log data is malformed. '
+                'Last GPS timemark is not at expected position.'
+            )