Ionospheric Digital DatabaseBack to Collection NOAA/NESDIS/NGDC/STP/Ionosonde
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Ionospheric Digital Database
The ionosphere is that part of the Earth's atmosphere that results mainly from the photo ionization of the upper atmosphere. Traditionally, the following ionospheric regions and their approximate height ranges have been designated: D region (60-90 km (...etc)

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While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the (...etc)

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