Space Weather Information for users
>> Information for GPS users
Sunspot number and F10.7 flux
Twenty-seven day recurrent pattern of space weather
This page is reloaded every ten minutes when the automatic renewal is selected.
Current condition of geomagnetic activity
Update :2016/09/07 13:00:00 (UT)
deficit or updating
Related data: plots
Real-time total electron content (TEC) map over Japan
Variations of total electron contents (TECs) in Japan.
Relation between total electron contents (TEC) and delay time of propagation.
The accuracy of positioning using GPS is degraded because of variation of total electron contents (TECs) associated with geomagnetic stroms. The warning level is determined by Dst index predicted by neural network.
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