Attribute_Name	ORDER	Storage_Type	Measurement_Scale	Number_Type	UNITS	DESCRIPTION	CODES
year	1	a	date-time	n/a	nominalYear	1997-2001	
doy	2	a	date-time	n/a	nominalDay	day of year	
species	3	f	nominal	n/a	dimensionless	three major grass species	B=bouteloua gracilis P=Pascopyrum smithii S=Stipa comata
CO2trt	4	f	nominal	n/a	dimensionless	see reference	C=unchambered plots; A=ambient CO2 chambered plots; H=720ppm CO2 chambered plots
rep	5	f	ratio	integer	dimensionless	field block	1,2,3
msrmtCO2	6	f	nominal	n/a	micromolePerMole	exiting cuvette CO2 conc.	H= near 720; L=near 360
lf area	7	f	ratio	real	squareCentimeters	area of leaves inside cuvette	
lf wt	8	f	ratio	real	gram	dry wt. of leaves inside cuvette	
analysis	9	f	ratio	real	micromolePerMole	outgoing CO2 concentration	
cuvetteT	10	f	ratio	real	celsius	temperature	
vpout	11	f	ratio	real	millibar	outgoing vapor pressure	
stom resis	12	f	ratio	real	centimeterPerSecond	stomatal resistance	
stom cond	13	f	ratio	real	molePerMeterSquaredPerSecond	stomatal conductance	
assim	14	f	ratio	real	micromolePerMeterSquaredPerSecond	lear CO2 assimilation	
ci	15	f	ratio	real	micromolePerMole	intercellular CO2	
cratio	16	f	ratio	real	dimensionless	inter/extracellular CO2 conc.	
