Attribute_Name	ORDER	Storage_Type	Measurement_Scale	Number_Type	UNITS	DESCRIPTION	CODES
year	1	a	date-time	integer	nominalYear	1998 to 2001	1, 98, 99
doy	2	a	nominal	integer	nominal	day of the year	n/a
species	3	a	nominal	n/a	dimensionless	grass species	B=bouteloua gracilis P=Pascopyrum smithii S=Stipa comata
co2trt	4	a	nominal	n/a	dimensionless	see reference	C=unchambered plots; A=ambient CO2 chambered plots; H=720ppm CO2 chambered plots
rep	5	a	nominal	n/a	dimensionless	field block	1,2,3
msrco2	6	a	nominal	n/a	dimensionless	code for target measurement CO2	see analysis variable for actual concentration
par	7	i	ratio	integer	molePerMeterSquaredPerSecond	light level at the cuvette	1, 50, 100, 160, 290, 590, 850, 1250
lfarea	8	i	ratio	real	squareCentimeters	leaf area inside the cuvette	n/a
lfwt	9	i	ratio	real	gram	leaf dry weight inside cuvette	n/a
analysis	10	i	ratio	real	micromolePerMole	exiting cuvette CO2 conc.	n/a
cuvtemp	11	f	ratio	real	celsius	measured cuvette temperature	n/a
vpout	12	f	ratio	real	millibar	exiting cuvette vapor pressure	n/a
stomresis	13	f	ratio	real	CentimeterPerSecond	stomatal resistance	n/a
stomcond	14	f	ratio	real	molePerMeterSquaredPerSecond	stomatal conductance	n/a
assim	15	f	ratio	real	micromolePerMeterSquaredPerSecond	leaf assimilation rate	n/a
int. CO2	16	f	ratio	real	micromolePerMole	intercellular CO2	n/a
ci/ca	17	f	ratio	real	dimensionless	inter to extracellular CO2	n/a
transpir	18	f	ratio	real	micromolePerMeterSquaredPerSecond	Transpiration rate	n/a
assim/gm	19	i	ratio	real	micromolePerGramPerSecond	assimilation of a leaf dry weight basis	n/a
