Las Breñas - near Yaiza
In the dropdown list for height in the diagram “Wind Animation” the first 6 values are in “metres above ground”, the last 4 are in “mb”. Weather specialists use “mb” or millibars atmospheric pressure for height definition.
850 mb is roughly 1,500 metres, 700 about 3,000, 500 about 5,500 and 250 is nearly 10,500 metres.