Wind Navboxes

Wind Navboxes list

Current wind (Wind)  Current wind measurement.
Current wind component (cWind) Wind component in current direction of the flight. Positive values indicate tailwind, negative values indicate headwind. Two numbers are displayed. First number is difference between groundspeed and true airspeed. The second one is wind component derived from the calculated wind at current altitude.

When the two are significantly different you will know not to rely on the calculated wind strength.