Variable names for the 30min data files at CF02 and ER01 from Paul Houser.

TIME           decimal (DOY)               
DOY            integer (DOY)               
CST            hour-of-day (Hours)        
Rnet           net radiation (W/m/m)     
PPT            precipitation (mm/0.5 hour) 
LE             latent heat flux (W/m/m)    
LE(residual)   latent heat flux from energy budget (W/m/m)     
H(sonic)       sensible heat flux (W/m/m)  
G(plate1)      soil heat flux (W/m/m) (into the ground)
G(plate2)      soil heat flux (W/m/m)      
G(average)     soil heat flux (W/m/m)      
CO2\_Flux       carbon dioxide flux (umol/m/m/s)  
u*             friction velocity (m/s) 
Uave.1         wind speed from AWS (m/s)         
Uave.2         wind speed from EC sonic (m/s)    
Udir.1         wind direction from AWS (deg)     
Udir.2         wind direction from EC sonic (corrected) (deg) 
Soil\_Temp      soil temperature (depth unknown) (C) 
Tair.1         temperature from AWS (C)          
Tair.2         temperature from EC sonic (C)     
eair           water vapor pressure (kPa)        
RH             relative humidity (\%)             
stdW           std deviation of vertical wind (m/s)    
stdU           std deviation of horizontal wind (m/s)  
stdT           std deviation of temperature (C)        
stdQ           std deviation of water vapor pressure (umol/m/m/s) 
stdC           std deviation of carbon dioxide (umol/m/m/s)