Weather station ECHO:  Data organization Readme

All data files are in comma-delineated format, organized as columns of values.

Column 1
In all files the first column represents the time of averaging, expressed as Day of the Year 
and time of day as a decimal. Each minute represents 1/1440 of a day, so 0800 for 
example would be 0.333.

Data columns
For some variables, data do not exist for both years. Therefore, the first column of is for 
1992, followed by a column for 1991 (NOTE: two columns each year for wind data only).

For each variable listed below, the time intervals of available hourly data are indicated. A 
placeholder has been inserted during intervals of no data, prior to and following each 
field season. Intervals of missing data are also indicated, and refer to periods of no or bad 
data (e.g. when sensors were rimed, or disconnected).

N.B. - Before using these data, please also obtain the additional documentation for these 
measurements, available from the Weather station ECHO index page!

Air temperature ( C)
	1992		140.667 to 220.417; missing 141.500 to 142.667
	1991		151.792 to 192.500; no missing
	placeholder:	-99.9

Relative humidity (%)
	1992		140.667 to 220.417; missing 141.500 to 142.667
	1991		151.792 to 192.500; no missing
	placeholder:	-99

Vapor pressure (mb or hPa)
	1992		142.708 to 220.417; no missing
	placeholder:	-9.999

Wind speed and direction (m s-1 & degrees)
	**See documentation for details on missing data**
	1992	SPEED		147.583 to 220.417, missing: 148.333, 148.583-
				148.667, 191.125-193.375
	1992	DIR.		147.583 to 220.417, missing: 148.333, 148.583-
				189.458, 209.375-213.375
	1991	SPEED		151.792 to 192.500, missing: 164.042-164.167, 
				172.042-172.125, 172.875-174.417, 191.750-
				192.208
	1991	DIR.		151.792 to 192.500, missing: 164.042-164.167, 
				169.167, 171.958-172.125, 172.875-174.417, 
				176.042-176.167, 177.333, 185.042, 
				191.750-192.208
	placeholder:		-99.9 (speed) & -999 (direction)

Global irradiance (W m-2)
	1992		142.750 to 220.458; no missing
	1991		151.792 to 192.500; no missing
	placeholder:	-999

Net irradiance (W m-2)
	1992		143.542 to 220.458; no missing
	1991		151.792 to 192.500; no missing
	placeholder:	-999