Armagh Meteorological Record Formats for May 1964
The format of the meteorological readings has changed many times over the years but the readings for May 1964 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 | Visibility |
| 10 | Present weather |
| 11 | State of ground |
| 12 | Daily rainfall |
| 13 | Rainfall total |
| 14 | Sunshine daily |
| 15 | Sunshine total |
| 16 | Earth temperature 1ft |
| 17 | Earth temperature 4ft |
| Second Reading | |
| 1 | Date |
| 2 | Max temperature |
| 3 | Min temperature |
| 4 | Grass |
| 5 | VP |
| 6 | Relative humidity |
| 7 | Dew point |
| Third Reading | |
| 1 | Date |
| 2 | Barometer |
| 3 | Attached thermometer |
| 4 | Dry |
| 5 | Wet |
| 6 | Wind direction |
| 7 | Wind force |
| 8 | Cloud amount |
| 9 | Visibility |
| 10 | Present weather |
| 11 | State of ground |
| 12 | VP |
| 13 | Relative humidity |
| 14 | Dew point |
| 15 | Snow lying (9h) |
| 16 | Snow lying fresh (0h-24h) |
