| Data | Content | Columns | length |
| Record Type | 21 | 1-2 | 2 |
| Print Observations | ____ | 3 | 1 |
| Distance Units | ____ | 4 | 1 |
| Incl Stns in 27 File | ____ | 5 | 1 |
| Incl Remarks in 27 File | ____ | 5 | 1 |
| Staff Reading Test | ____ | 6-11 | 6 |
| Station Height Test | ____ | 12-17 | 6 |
| Station Distance Test | ____ | 18-23 | 6 |