Armagh Meteorological Record Formats for April 1821
The format of the meteorological readings has changed many times over the years
but the readings for April 1821 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 | Observations on the weather
| 2 | Wind direction
| 3 | Barometer E
| 4 | Barometer N
| 5 | Barometer M
| 6 | Thermometer In E
| 7 | Thermometer In N
| 8 | Thermometer In M
| 9 | Thermometer Out E
| 10 | Thermometer Out N
| 11 | Thermometer Out M
| 12 | Date
|
|