Armagh Meteorological Record Formats for March 1805

The format of the meteorological readings has changed many times over the years but the readings for March 1805 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