From: Statistical analysis of short-wave fadeout for extreme space weather event estimation
Absorbtion intensity (dB)
Once per year
Once per 10 years
Once per 100 years
Once per 1000 years
References
Long circuit χ = 0 and f = 6.6 MHz
71
83
93
100
Equation (10) Maeda and Inuki (1972)
Vertical χ = 0 and f = 6.6 MHz
130
210
320
Equation (2) Sato (1975)