HF Systems
FORECAST SOL: Normal green MAG: Moderate yellow ION: Normal green
HomeHF SystemsGlobal HFT Index Wednesday, Nov 22 2017 18:22 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.
go to top of page