Title: Numerical maps of fbEs for solar cycle minimum
Description: World numerical maps of lower decile, median, and upper decile values of the monthly distribution of fbEs have been completed for all 12 months of 1964, a solar cycle minimum year.
Subjects: Charts, diagrams, Charts, diagrams, etc, Effect of solar cycle on, Maximum usable frequency (Radio), Solar cycle, Troposphere, Tropospheric radio wave propagation