This readme file describes the .STA datafiles provided for the CU v1 Windcubes. 

For questions, please contact Julie.Lundquist@colorado.edu, 303/492-8932.
If you use these data, please contact Julie regarding citations/authorship.

Both Windcubes are Leosphere/NRG Version 1 Windcubes.
-------------------------------
As of 12 March 2018, WC68 units was located at the concrete pad south of 
the M5 datashed at the NWTC. 

The .STA data files provide two-minute averages of wind speed and wind direction 
at ten vertical levels. The given timestamp marks the end of the two-minute averaging
period. Note that the "u" and "v" as defined in these files are NOT
in meteorological coordinates, but rather in engineering coordinates: 

U positive from north -> south 
V positive from east -> west
W positive from up -> down

Therefore, 
u_meteorological = -v_native
v_meteorological = -u_native
w_meteorological = -w_native

The useful header starts on line 57 and the data start on line 58. 
The ten altitudes are defined in line 14.

Date/Time: DD/MM/YYYY HH:MM:SS UTC
Wiper Count: ignore unless suspect precipitation (but often poor metric for precip)
Tm: internal temperature (deg Celsius) of the laser unit
****** begin series of quantities that will repeat for each of ten heights **********
Vhm1: mean scalar averaged horizontal wind speed (m/s) at the first (lowest) measurement altitude for the 2-min period
dVh1: standard deviation of scalar averaged horizontal wind speed (m/s)
VhMax1: maximum 1-sec wind speed measurement during the 2-minute period (m/s)
VhMin1: minimum " "
Azim1: vector-averaged wind direction of altitude 1
um1: average u-component at altitude 1
du1: standard deviation of u-component at altitude 1
vm1: average v-component at altitude 1
dv1: standard deviation of v-component at altitude 1
wm1: average w-component at altitude 1
dw1: standard deviation of w-component at altitude 1
CNRm: average CNR for the two-minute period (dB); *** we often use -17 dB as a threshold
dCNR: standard deviation of CNR
CNRmax: maximum CNR
CNRmin: minimum CNR
spectral_broadening: 2 minute averaged spectral broadening (converted to m/s)
dspectral_broadening: standard deviation for previous value
Avail.1: percentage of data available at this altitude (assuming CNR threshold of -22 dB)
******
Repeats for next 9 levels

*****
Note on time stamp:
9 April 2015 lidars were compared to time.gov. Both lidars lagged time.gov
by one second.