Armagh Meteorological Record Formats for December 1959
The format of the meteorological readings has changed many times over the years but the readings for December 1959 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 | Weather at time of obs |
| 11 | State of ground |
| 12 | Rain daily |
| 13 | Rain total |
| 14 | Sunshine daily |
| 15 | Sunshine total |
| 16 | Snow lying depth 9h |
| 17 | Snow lying depth 0h-24h |
| Second Reading | |
| 1 | Date |
| 2 | Max temperature |
| 3 | Min temperature |
| 4 | Grass min |
| 5 | Vapour pressure (VP) |
| 6 | Relative humidity |
| 7 | Dew point |
| 8 | Earth temperature 1ft |
| 9 | Earth temperature 4ft |
| Third Reading | |
| 1 | Date |
| 2 | Barometer M.S.L |
| 3 | Attached thermometer |
| 4 | Dry |
| 5 | Wet |
| 6 | Wind direction |
| 7 | Wind force |
| 8 | Cloud amount |
| 9 | Visibility |
| 10 | Weather at time of obs |
| 11 | State of ground |
| 12 | Vapour pressure |
| 13 | Relative humidity |
| 14 | Dew point |
