Armagh Meteorological Record Formats for July 1951
The format of the meteorological readings has changed many times over the years but the readings for July 1951 can be interpreted using the following table. The Column number refers to the columns on the readings counted from left to right and the Contents refers to the instrument or measurement being recorded.
| Column | Contents |
| First Reading | |
| 1 | Date |
| 2 | Barometer |
| 3 | Attached thermometer |
| 4 | Dry |
| 5 | Wet |
| 6 | Wind direction |
| 7 | Wind force |
| 8 | Cloud amount |
| 9 | Cloud form |
| 10 | Weather at time of obs |
| 11 | Weather since last obs |
| 12 | Rain auto |
| 13 | Rain 8" check |
| 14 | Total (ins) |
| 15 | Rain (mm) |
| 16 | Visibility |
| Second Reading | |
| 1 | Date |
| 2 | Barometer (mb) |
| 3 | Barometer (ins) |
| 4 | Attached thermometer |
| 5 | VP |
| 6 | Humidity percentage |
| 7 | Grass min |
| 8 | In ground temperature 1ft |
| 9 | In ground temperature 4ft |
| 10 | Cloud direction |
| 11 | State of ground |
| Third Reading | |
| 1 | Date |
| 2 | Barometer |
| 3 | Attached thermometer |
| 4 | Dry |
| 5 | Wet |
| 6 | Wind Direction |
| 7 | Wind force |
| 8 | Cloud amount |
| 9 | Cloud form |
| 10 | Weather at time of obs |
| 11 | Weather since last obs |
| 12 | Max (corrected) |
| 13 | Min (corrected) |
| 14 | Grass min |
| Fourth Reading | |
| 1 | Date |
| 2 | Barometer |
| 3 | Barometer |
| 4 | Attached thermometer |
| 5 | VP |
| 6 | Humidity percentage |
| 7 | Sunshine |
| 8 | Cloud direction |
| 9 | Visibility |
| 10 | State of ground |
