Ionospheric Sounding Data in JAPAN Japanese version is here

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IONOSONDE

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Ionogram

Color
Latest data
Wakkanai Kokubunji Yamagawa Okinawa All sites
MPEG movie for the latest 48 hours
Wakkanai Kokubunji Yamagawa Okinawa
Search past 30 days
MPEG movie(1 day unit)
Free reference(After Nov,2001)
Free interval 15 minutes interval

Monochrome
Free reference
Free interval 15 minutes interval

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Summary ionogram

Free reference(After Nov,2001)
Free interval , Free layer

Free reference(15 minutes interval)
Each station Each layer

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Factor values provided from Ionograms

Indicate with HTML format
Indicate with publication booklet format (graphic file)

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Destination of comments/questions/data requests
and consideration in the data use, look at here.