The data on this website is research level and subject to change. For further
information please contact Marek Zreda:
email: marek@hwr.arizona.edu
   ph: +1 (520) 621 4072

COSMOS probes are field calibrated by taking volumetric samples at depths of 
up to 30 cm and distances of up to 225 m from the probe location.  In the 
calibration table, the headers are:
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Label		The unique id of the volumetric sample.
Loc		The location where the sample was taken, given as compass 
			direction (eg N for North, SE for South-East) and 
			distance in meters (25 for 25 m from the probe).
Depth		The depth (cm) range at which the sample was taken.
Vol?		For some samples the sample volume could not be determined. 
			If 'Vol.', a volumetric sample was made, 
                        otherwise '---' for a gravimetric sample.
Total Wet (g) 	The weight (g) of the sample + container before drying.
Total Dry (g)	The weight (g) of the sample + container after drying.
Tin (g)		The weight (g) of the sample container.
Soil Wet (g)	The weight (g) of the sample before drying.
Soil Dry (g)	The weight (g) of the sample after drying.
GWC (%)		The percentage change in sample weight due to drying.
BD		The bulk density of the sample.
VWC (%)		The percentage volumetric water content of the sample.
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To calibrate the probe, the mean corrected counts (Level 2 data) is determined 
for the period over which the calibration was conducted.  The mean counts are 
used with the mean volumetric water content to compute N0, the maximum count 
rate as defined in Equation A1 of Desilets et al (2010):

http://cosmos.hwr.arizona.edu/Docs/DesiletsWRR2010.pdf

Maximum count rates are then given as 'Maximum Count Rate (/hour)' for each 
probe, and listed on the probe homepage.