Armagh Meteorological Record Formats for October 1879

The format of the meteorological readings has changed many times over the years but the readings for October 1879 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	External thermometer
3	Attached thermometer
4	Barometer
5	Hygrometer
6	Wind direction
7	Wind speed
8	Rain square
9	Rain kew
10	Weather remarks
11	Roof thermometer
	Second Reading
1	Date
2	External thermometer
3	Attached thermometer
4	Barometer
5	Hygrometer
6	Wind direction
7	Wind force
8	Max (thermometer)
9	Min (thermometer)
10	Weather