These are used to indicate the originating data stream when data from different processing streams are combined.
| Code | Description | Last time modified |
|---|---|---|
| D | From MEDS databases. | 5/20/2003 8:43:33 AM |
| H | Indicates the record is included to construct track charts for BATHY and TESAC data. | 5/20/2003 8:44:45 AM |
| I | Incoming data. | 5/12/2003 10:31:56 AM |
| R | A record labeled "H" has been changed as a result of QC. | 5/20/2003 8:45:11 AM |