not far from this airway, viz, Royal Center, Ind., Drexel, Nebr., Broken Arrow, Okla., and Groesbeck, Tex. Their locations are shown in Figure 1. At these stations regular observations have been made of wind direction and velocity at different levels, heights of clouds, particularly of the lower… … Fig. 1.—Meteorological stations along Chicago-Dallas Airway flights along the Chicago-Dallas Airway. The meteorological factors or elements of most importance in connection with flight schedules are visibility; frequency of fog and low clouds: frequency and intensity of precipitation; frequency and…
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