HF Systems
FORECAST SOL: Disturbed red MAG: Normal green ION: Normal green
HomeHF SystemsGlobal HFT Index Tuesday, Mar 19 2024 03:53 UT
Global HF

T Index

T Index Product Application
Monthly T Indices These T Indices apply when you are making a prediction using ASAPS or the on line tools and are planning to use the prediction later on (ie on a monthly basis). These predictions will not account for ionospheric storms.
Real Time T Indices These T Indices apply when you are making a prediction using ASAPS or the on line tools and are using it immediately. These indices will fluctuate as they are based on real time foF2 measurements and will account for ionospheric storms.
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