NSA/METTWR/C1 - Wind Speed data intermittently bad

Wind speed at 20m level icing up and wind speed values are intermittently
0 m/s, lower than other sensors and good at times.  Heater failure on sensor
that prevents icing.

Use data with caution; compare with other wind speed data

• Std Dev of Wind Speed(wind_spd_sd)
• Minimum Wind Speed(wind_spd_min)
• Mean Wind Speed(wind_spd_mean)
• Maximum Wind Speed(wind_spd_max)
• Wind speed vector average(wind_spd_vec_avg)

• Maximum Wind Speed(wind_spd_max)
• Std Dev of Wind Speed(wind_spd_sd)
• Wind speed vector average(wind_spd_vec_avg)
• Mean Wind Speed(wind_spd_mean)
• Minimum Wind Speed(wind_spd_min)
• Wind Speed out of range error(wind_spd_out_of_range_error)