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S4 Index

From Wikipedia, the free encyclopedia

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

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This parameter is displayed in real time by many institutions:

References

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  1. ^ Basu, Santimay; Basu, Sunanda. Scintillation technique for probing Ionospheric irregularities. p. 128.