// Workers AI · dad joke modeWhat did S4 Index say to its friend? I've got a 4-getful memory.
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The Index is a standard index used to measure ionospheric disturbances. It is defined as the ratio of the standard deviation of signal intensity to the average signal intensity.[1]
Real Time data
[edit]This parameter is displayed in real time by many institutions:
References
[edit]- ↑ Basu, Santimay; Basu, Sunanda. Scintillation technique for probing Ionospheric irregularities. p. 128.
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