SGP/EBBR/E12 - Wind Direction

For much of the period above, a malfunction in the E12 EBBR wind direction
sensor (insect larvae shorting out the circuit board) caused incorrect
values for 5 minute res_ws, wind_d, and sigma_wd, 15 minute mv_wind_d, and
30 minute res_ws, wind_d, and sigma_wd.  Wind direction normally indicated
north (near 0 or 360 degrees); there were some times during the period when
wind directions looked good, but the lack of variation in direction and sigma
implies that the data is suspect.  Therefore, it would be wise to flag all
of the values listed above during the entire time period as incorrect.
The wind direction sensor (S/N 3081) was replaced with S/N 3042 at 1515 GMT
on June 8, 1994.

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• Wind direction vector mean (mV)(wdir_vec_mean_mv)

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• Wind direction vector mean standard deviation(wdir_vec_std)

• Wind speed vector mean(wspd_vec_mean)
• Wind direction vector mean(wdir_vec_mean)
• Wind direction vector mean standard deviation(wdir_vec_std)