Fig. 5

Variation in measured wind speeds (m/s) and directions (°) and associated fluctuations in mean detection efficiency (DE) recorded in A a small-scale range test array (N = 6 receiver stations) over a period of 25 d and B a large-scale range test array (N = 22 receiver stations) over a period of 373 d. Scales refer to concentric circles indicating the value of mean DE (dark dashed lines) and frequency of wind speed and direction (light solid lines)