Abstract
The electron density in the D-region of the ionosphere has been deduced from measurements of the amplitude of the wavefield above a ground transmitter operating at 202 kHz. New results from two daytime rocket flights and corrected results from a previous flight are presented. Although observations were spread over nearly a year, similar electron distributions were found for all three flights. A method of extending the distribution to E-region heights using observations of the penetrating wave amplitude is discussed.
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