All stations are located in places where they can measure accurately the wind and provide reliable data for kitesurfing (no wind shadows etc.) Also all stations are calibrated and tested manually with wind meters for 100% accurate results.
Wind speed is not the holy grail of kitesurf conditions. The wind quality is different in different places. Our experience shows that on some spots 13 knots are enough to ride like crazy with 12m kite, while 11 knots are barely rideable on other spots with any kite size. Wind speed is the basic metric for kitesurfing conditions but not the only one