Realtime European ionosphere

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This page displays total electron content (TEC) in the ionosphere over Europe, as calculated from GPS data, using the MIDAS tomographic algorithm. It is updated continuously (with a lag of about half an hour, to allow for data acquisition and processing). See the space weather page for more information about the science behind these reconstructions. Data is given in standard TEC units, equivalent to 1016 electrons per square meter.

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Download TEC file

TEC file specifications