Fig. 11From: Statistical and simulation study on the separation in junction frequencies between ordinary (O) and extraordinary (X) wave in oblique ionogramsA typical set of oblique-incidence F2-layer traces at 12:50 LT in summer and spring, the F2-layer trace circled by a red ellipse was taken on August 7, 2010, and the trace circled by a white ellipse was taken on March 7, 2010Back to article page